DOKUMEN123.COM

indicate the positions or locations of the individual scales: Preocular scales, or preoculars, are those lying directly in front of and in contact with the...

eyecap. The circumorbital scales towards the snout or the front are called preocular scales, those towards the rear are called postocular scales, and those...

Many species also have a divided preocular and/or ocular scale, and the second supralabialal scale overlaps the preocular in all species but one (G. tindalli)...

different areas used in describing trilobite cephalic morphology. 1 – preocular area; 2 – palpebral area; 3 – postocular area; 4 – posterolateral projection;...

connected spots, with a prominent spot on the vertebral region. A white preocular spot may be present; the upper lips and belly are white. The common krait...

with upper labials 3 and 4 entering the eye. The rinkhals also has 1 preocular (rarely up to 3) and 3 postocular scales. Finally, the rinkhals has 8–9...

little shorter. The loreal is nearly as long as it is deep. There are one preocular and three (rarely four) post-oculars. Its temporals are 2+2 or 2+3. There...

and 10-14 sublabial scales below. Its eyes have 3 or occasionally 4 preocular and 2–5 postocular scales. The black mamba inhabits a wide range in sub-Saharan...

dry eye as a clinical and biochemical entity". In F. J. Holly (Ed.) The preocular tear film – In health, disease, and contact lens wear. Dry Eye Institute...

as the parietals or slightly shorter; usually three loreals; one large preocular, with a small subocular below; two postoculars; temporals 2+2; 8 Upper...

the eight lateral digital tentacles show chemoreceptive abilities; the preocular tentacles detect distant odor and the lateral digital tentacles detect...

rostral horn) and one above each superior orbital ridge above the eyes (preocular horns), somewhat reminiscent of the ceratopsid dinosaur genus Triceratops...

29–35 Ventrals 214–259 Caudals 54–71, divided Anal entire Prefrontal scales usually 4 Supralabials 8–10 Infralabials 9–15 Preoculars 1–2 Postoculars 2–6...

the rear, infrequently downwards and forwards. There are also nasal, preocular, supraocular, post-ocular and parietal spines. There is normally no knob...

cuneate scale present between 4th and 5th lower labial), as well as one preocular in contact with internasals, and three postoculars. Temporals are 2 +...

cephalic sheath composed of the fused sheaths of the digital tentacles; O', preocular tentacle; O'', postocular tentacle; S, spadlx; SLL, superior labial lobe;...

1 – preocular area; 2 – palpebral area; 3 – postocular area; 4 – posterolateral projection; 5 – occipital ring; 6 – glabella; 7 – posterior area; 8 –...

stripe is usually bordered below by a white stripe running from the upper preocular scale down to the supralabial scales just below and behind the eye. The...

little longer, as long as the parietals; two or three loreals; a large preocular, sometimes touching the frontal; a small subocular below; two postoculars;...

is semidivided, the suture proceeding from the first upper labial. A preocular is present, narrower than the nasal or the ocular, in contact with the...

single. The subcaudal scales are paired and number 53-65. There is 1 preocular, 3 (or 2) postoculars, and 2 or 3 suboculars. The upper labials number...

nasal scale and preocular scale are in contact and the profile of the snout is more pointed; in B. fasciolatus the nasal scale and preocular scale are separated...

prefrontals and preoculars. The supraoculars are small. The parietals are one and a half times the size of the frontal. The preoculars are entire, while...

often united with the prefrontal. It has one large preocular (a small subocular below the preocular is rarely present) and two postoculars. Temporals are...

the preocular tear film, because rose bengal has been proven to not be able to stain cells because of the protective functioning of these preocular tear...

the prefrontal scale is in contact with second upper labial; one or two preoculars, two or three postoculars, and two or three small anterior temporals are...

highly fused into a nozzle-like structure in Opabiniidae. Based on their preocular position and putative protocerebral origin, the frontal appendages are...

scalation is distinctive in that there is only one internasal scale, no preocular scale, and one anterior temporal scale. The dorsal scales are smooth,...

often present in B. caeruleus; rostral, upper labials, anterior nasal and preocular, white. Sind kraits are primarily nocturnal, and often (unintentionally)...

located under the eye, and 9–11 sublabial scales below. Its eyes have three preocular and 3–5 postocular scales. The eastern green mamba is native to regions...

than long, widely separated from the preocular. A single prefrontal, forming sutures with the nasal and the preocular. Frontal nearly 1+1⁄2 times as long...

the Nautilus also perform several sensory functions. Their ocular and preocular tentacles feature cilia, and operate as mechanoreceptors, while their...

cases) touching the eye. A single loreal scale is present, along with one preocular and one presubocular scale. There are two postocular scales and a temporal...

are deep, or, they can be deeper than they are long. B. trigonata's one preocular does not extend to the upper surface of the head. The species has two...

not enter the eye, eight or 9 (rarely 10) lower labials, as well as one preocular (sometimes two) and two (sometimes one or three) postoculars. Temporals...

are slightly keeled and smooth. They typically have one apical pit, one preocular scale and two postocular scales. Their hemipenis is marginally bilobed...

diagnostic characters. The mental contacts the anterior chin shields. A preocular is present. Each ventral has a dark anterior half and a light posterior...

2.0 to 2.5 times as broad as the supraocular. C. pavimentata has one preocular scale and one postocular scale with four upper labials (the second and...

complex: 21–29 subcaudals in males, 13–26 subcaudals in females. Their upper preocular is not separated from their nasal scales. They have more fragmented parietals...

than the parietals. The loreal is somewhat longer than deep. One large preocular and two postoculars are present. The temporals are arranged 2+2 or 2+3...

large plates. The nasal scale is often divided. There is one (rarely two) preoculars and two postoculars. The temporals number 2+2 or 2+3 (rarely 1+2). There...

intersupraocular scales. Usually, there are two loreal scales between preoculars and the postnasal. There are 12–17 (usually 14–15) supralabial scales...

shorter than the parietal scales. The loreal is long and there is one preocular and two postoculars. The temporal scales are 2+2, 1+1, or 1+2. There are...

pierced in a single nasal scale. There is no loreal scale. There are no preocular scales, the prefrontal entering the eye. The body is cylindrical, and...

parietals. The loreal is as long as deep or longer than deep. There is one preocular, usually with a small subocular below, and two or three postoculars. The...

scale is small, elongated, and not entering the eye. The snake has one preocular and two postocular scales, and between 2 and 3 temporal scales. It has...

the fourth ones located over and under the eye. Its eyes have three preocular, three postocular and one subocular scale. Jameson's mamba occurs mostly...

head, and coral pink toward the tail. This snake also features a lower preocular between the upper labial scales of the mouth. The anal scale is divided...

distance from the snout, much shorter than parietals. As there is no preocular, the prefrontal contacts the third upper labial. There is one very small...

pupil; nostril in a single very small nasal; no internasals; no loreal; no preocular; no anterior temporal. Body cylindrical. Dorsal scales smooth, without...

divided nasal scale sometimes forms a suture with the preocular scale. They have one preocular scale and two postocular scales. They have one primary...

group by the presence of intercanthals, an infrequently divided upper preocular, and a combination of other morphological characters. Males typically...

distance from the end of the snout, much shorter than the parietals; one preocular and two postoculars; a single temporal; seven upper labials, third and...

than it is deep, and frequently united with the prefrontal. It has one preocular and two postoculars; the temporals are 1+2; of its seven upper labials...

length. It has moderately robust to weak spines on its head, the nasal, preocular, supraocular, postocular, tympanic and parietal spines being always present...

prominent, its length more than two times the diameter of the eye. There is 1 preocular, and there are 2 postoculars. There is 1 anterior temporal, and there...

supraocular scale, while the frontal scale touches the preocular scale. There is one preocular scale and one or two postocular scales, 1+1 temporal scales...

midbody Ventral Subcaudal Anal plate Upper labials Upper labials to eye Preoculars Postoculars Lower labials Temporal 21 195-227 50-68 (paired) Single 7...

supralabials with the 3rd, 4th and 5th touching the eye. There is one preocular scale. Description from G. A. Boulenger, The Fauna of British India, Including...

The supraorbital is smooth with a tiny terminal spine, there is one preocular and two parietal spines. The eyes have notable papillae on their upper...

contact with the preocular. One preocular. One or two postoculars. Temporals 1+1. Seven upper labials, the second in contact with the preocular, third and fourth...

the preocular and nasal scales. This species has a scale situated between the two scales whereas other species of this genus have the preocular and nasal...

the mouth. The frontal is twice as wide as a supraocular. There is a preocular present. There are four upper labials, the second and third contacting...

5-6 soft rays. There are robust spines on the head, these are nasal, preocular, supraocular, postocular, tympanic, parietal and nuchal spines but typically...

are semidivided, the suture proceeding from the first upper labial. One preocular is present, which is narrower than the nasal or the ocular, and in contact...

scales are oriented laterally. There is considerable geographic variation. Preocular scales are present in snakes from Singapore and Malaya, but absent in...

are as long as the prefrontals, and are extensively in contact with the preocular. The frontal is small, not longer than broad, broadest behind, forming...

are partially divided into two or may not be divided. They have three preoculars, two or three postoculars, 9–10 supralabial scales, three or four infralabials...

snout, as long as the parietals; loreal about twice as long as deep; preocular single, not extending to the frontal; two postoculars; temporals 1+2 or...

scales. The loreal is square or deeper than it is long. There is one preocular scale, extending to the upper surface of the head, and two or three postoculars...

loreal scale is thin and elongate, and appears stretched between the preocular and the nasal. Other diagnostic features is an elongate left rudimentary...

long as the parietals or a little shorter; loreal longer than deep; one preocular; two postoculars, both in contact with the parietal; temporals 1 (or 2)...

shorter than the parietals. The nasal is divided, in contact with the preocular. There is one postocular. There are seven upper labials, the third and...

scales: Internasals shorter than prefrontal scales. No loreal scale; the preocular scale contacts the posterior nasal. Two postocular scales, with temporal...

in contact with the rostral, is present. No loreal is present, and the preocular contacts the nasal. It has a cylindrical body, and the tail is short....

each nasal scale (including or adjacent to the nostril) are loreal or preocular scales, or both, and behind each eye, between the supralabials and parietals...

small interoculars in line between them; 2 scales on line between upper preocular and nasal scale; 9–11 upper labials, first upper labial separated from...

from neck. Eye minute, with round pupil. Nasal divided. No loreal. No preocular. Prefrontal entering the eye. Body cylindrical; tail short. Dorsal scales...

parietals or shorter; loreal as long as or a little longer than deep; one preocular; two postoculars, only the upper in contact with the parietal; temporals...

keeled, the head has no loreal scale, and the postnasal scale touches the preocular scale. So, only two scales are between the nasal opening and the eye....

nasal scale. No loreal, internasal, or temporal scales are present; the preocular can be present or absent; the parietals contact the labials. The body...

than the parietals. The nasal is entire, in contact with the preocular. There is one preocular and one postocular. The temporals are arranged 1+1. There...

keels from a few scale rows after the nape; slight discolouration in the preocular; inter-scalar white with black and white anteriorly-converging bars, white...

first upper labial to the nostril, which is close to the rostral. The preocular is as large as the ocular, but much smaller than the nasal, in contact...

medium, with round pupil; nostrils large; frontal small; no loreal; 1 preocular in contact with posterior nasal; 3 postoculars; temporals 2+1 or 2+2....

subcaudals, 23–29 scale rows around neck, 23–27 scale rows at midbody, 1–2 preoculars, 6–8 supralabials. A scattered distribution in north-eastern Africa: Egypt...

spots on the back; underside white. Scales: Supralabials 9; loreal 1, preocular 1-2, postocular 2, subpostocular 1 or absent, temporal 2+2 or 2+3; 19...

of the snout, shorter than the parietals; loreal longer than deep; one preocular (sometimes divided); two or three postoculars; temporals 1+1, or 1+2,...

not greatly broader there than in the middle, not in contact with the preocular; temporals 2+2, 8 supralabials 4th and 5th touching eye. V.166–175; C...

having one internasal scale, one loreal scale that touches the eye, a preocular scale above the loreal scale, and one prefrontal shield. Dunn's water...

not enter the eye and 8 or 9 (rarely 10) lower labials, as well as 1 preocular and 2 postoculars. Temporals are variable, 1+2 or 1+3. This species, N...

is weakly spined with only the nasal spines always present while the preocular and postocular spines are normally absent and the supraocular, tympanic...

little shorter than the parietals. Nasal entire, in contact with the preocular. One postocular. Seven upper labials, third and fourth entering the eye...

plate: Single Upper labials: 7 (8) Upper labials touching eye: 3 & 4 Preoculars: 1–2 Postoculars: 2–3 Lower labials: 8 Temporals: variable The venom of...

gold markings. Males have a reddish orange stripe running from their preocular scales to the lateral side of the nape, a yellow-orange ventrolateral...

There are seven upper labials, one upper labial enters the eye; two preoculars, three postoculars, and the lower labials are usually eight in number...

angulate laterally; anal entire; subcaudals 118–133, paired. Loreal 1; preocular 1, reaches upper surface of head, often touches frontal; postoculars 2...

the snout, and shorter than the parietals. Eye between four shields: a preocular, a supraocular, a postocular, and a subocular. Loreal longer than deep...

as long as its distance from the rostral or the tip of the snout. One preocular and two postoculars. Two superposed anterior temporals. Seven or eight...

snout, shorter than the parietals. Supraocular nearly as broad as long. Preocular minute. A small postocular. Temporals 1+2. Seven upper labials, third...

spines on the head and those present are only the nasal spines while the preocular and parietal spines are typically absent and the supraocular, postocular...

digital tentacles which are able to detect chemosensation, though its preocular and postocular tentacles are more sensitive and also are believed to function...

in scales. The spines on the head are robust and are made up of nasal, preocular, postocular, tympanic, coronal, parietal, and nuchal spines, although...

parietals; the lorealae are as long as deep or a little longer, It has one preocular, two or three postoculars, and one or two suboculars; the temporals number...

its distance from the rostral, slightly shorter than the parietals. One preocular and one postocular. A single anterior temporal. Seven or eight upper labials...

belly is a darker shade. The species has a characteristically prominent preocular ridge that is present even in juveniles. The smooth sided toad secretes...

shorter than the parietals. The nasal is entire, in contact with the preocular. There are two postoculars. The temporals are 1+1. There are seven upper...

may be moderately sized or large and the spines present are the nasal, preocular, supraocular, postocular, tympanic, parietal and nuchal spines although...

facial sutures are of variable length behind the palpebral lobes. The preocular sections of the facial suture follows a slight S-curve and intersect the...

each eye (supraocular ridge), and the loreal scale is fused with the preocular scale (they are separate in C. tropidosternum and C. jonesii ).[citation...

either branched with short branches or crenulated. There is a single preocular spine which can have a cluster of smaller spines around its base. The...

soft rays. There are robust spines on the head and these are the nasal, preocular, supraocular, postocular, tympanic, coronal, parietal and nuchal spines...

preoperculum p has 5 spines with an extra spine on uppermost spine. The preocular, supraocular, postocular and tympanic spines are well developed. The interorbital...

contact with second upper labial; 7–8 upper labials, 3–4 bordering eye; 1 preocular and 1–2 postoculars; 2, rarely 3, anterior temporals; Greenish or yellow-olive...

prefrontals; frontal nearly as broad as long, in contact with a large preocular; loreal longer than high; 2 postoculars; temporals 2+2; 8 supralabials...

as long as the parietals. The supraocular is narrow. There are three preoculars and two postoculars. The temporals are arranged 2+2 or 2+3. There are...

parietals. The loreal is about twice as long as deep. There is a single preocular, in contact with the frontal; and two postoculars. The temporals are 1+2...

than its distance from the rostral, much shorter than the parietals. One preocular, and one post ocular. Two superposed anterior temporals. Seven upper labials...

slightly longer than deep, a little smaller than the nasal. There is one preocular, and there are two postoculars. The temporals are arranged 1+2. There...

loreal. The prefrontal is in contact with the labials. It has one large preocular, two post-oculars with temporals 2+2 or 2+3 and 9 (or 8) upper labials...

parietals. The loreal is as long as deep or deeper than long. There is one preocular, and there are three (rarely two) postoculars. The temporals are arranged...

The species can identified from other wolf snakes, by the absence of preocular scale and presence of keeled dorsal scales. Smaller snakes have bright...

distance from the end of the snout or longer, as long as the parietals; one preocular, in contact with the frontal, with one or two suboculara below; twopostoculars;...

bordering the second supralabial scale, the absence of the loreal and preocular scales, a lone postocular scale, and the lack of a mental groove. Additionally...

nearly as long as the occipitals; loreal nearly as deep as long; one preocular, with a small subocular below 3 two postoculars; temporals 2+2; 9 upper...

pierced in a semidivided nasal. There is no loreal scale. There is one preocular, which is in contact with the nasal. The body is cylindrical. The tail...

Yellowtail Blind Snake Caribbean lowlands Helminthophis praeocularis Preocular Blind Snake Magdalena River Valley Endemic Liotyphlops albirostris Whitenose...

characters. The mental is in contact with the anterior chin shields. A preocular is present. The third and fourth upper labials are in contact with the...

it has supranasal expansion, prefrontal-superciliary contact, a single preocular, loss of one canthal/loreal element, and two temporals contacting the...

scale; (5) 8 (rarely 9) supralabials with SL 3–5 touching the orbit; (6) preocular reaching upper surface of the head; (7) 2 temporals in the first row,...

following scalation. The dorsal scales are in 17 rows at midbody. One preocular is present. There are two postoculars, only the upper in contact with...

characteristics. The upper labials three and four are in contact with the preocular scale. The head has an irregular, darkly pigmented ventral surface with...

quillback rockfish have a head protected by strong spines, the nasal, preocular, postocular, tympanic and parietal spines are present while there are...

of the body is brown. There is one small scale on the face called the preocular scale, located in front of the eye and wedged between two other scales...

scales in 15 rows, 9 supralabial, with the 4th to 5th touching the eye, 1 preocular, 2 postocular. The anal scales are entire in this species. It belongs...

premaxillaries Two bones forming the front portion of the upper jaw. preocular spine A spine positioned above and in front of the eye. preopercle, preoperculum...

slightly broader, 3 or 4 very small supraoculars; no supraciliaries; a preocular; interparietal as long as broad, as long as the frontal or slightly shorter;...

visible from above. Nostril in a single nasal, which is in contact with the preocular and separated from the rostral by the first upper labial, which forms...

longer than broad, as long as its distance from the end of the snout. One preocular and two postoculars. Two superposed anterior temporals. Seven or eight...

frontal. A single prefrontal (very unusual), which forms a suture with the preocular. Frontal 1+1⁄2 as long as broad, as long as its distance from the end...

surface of the head are enlarged. A preocular is present, in contact with the second upper labial. The preocular is slightly narrower than the nasal or...

as long as deep or deeper, sometimes touching the eye. There are two preoculars scales and three or four postoculars. The temporals are 2 + 3 or 4. There...

eyes themselves were notably large, and sat on an elevated area of the preocular region of the cephalon. The thorax was composed of around 11 distinct...

number of crown scales, along with many circumocular scales, with their preocular scales in contact with their nasal scales. They also have 18 supralabial...

comparatively large, the nostril at its anterior extremity; 1 large loreal; a preocular; lower eyelid composed of 2 or 3 opaque scales; upper eyelid vestigial;...

characteristics include absence of pattern on the side of the head, two preocular scales and three preanal scales are present, and the first upper labial...

one pair of internasals; the posterior parts are narrow. One loreal, preocular, postocular and three temporals are found. Of the 9 supralabials, 4 and...

lips, keeled scales on the throat, fusion of the loreal scale with the preocular (separate in other species), and the presence of a low supraocular ridge...

distance from the end of the snout, as long as the parietals. There is one preocular, in contact with the frontal, and one postocular. The temporals are arranged...

forward position and is part of a single nasal scale that touches the preocular scale. The body is moderately slender, while the tail is relatively short...

anteriorly; supralabial 9-10; usually 4th & 5th in contact with eyes; preocular 1; single well defined loreal; postocular 2-3; sometimes a single subocular;...

by a number of characteristics. It has 15 dorsal scale rows, one upper preocular scale, two or three postocular scales, 1+2 temporal scales, and seven...

having one internasal scale, one loreal scale that touches the eye, a preocular scale above the loreal scale, and one prefrontal shield. The Costa Rica...

loreal scale is small, pentagonal, and as tall as long. Two (or three) preoculars and two postoculars are present, and two large superposed anterior temporals...

tract. Additional distinguishing features are the long preglabellar and preocular fields (the flat fronts of the head in front of glabella and eyes respectively)...

fused with the prenasals. A loreal scale is present between the upper preocular and nasal. The supraoculars are separated by at least 7 scales, and by...

is seen, the point of which is wedged between the parietals. A small preocular and two small postoculars are present. There are seven upper labials,...

the snout, as long as the parietals; loreal usually longer than deep; preocular single, usually with a small subocular below, between the third and fourth...

scales. All four specimens of Pareas baiseensis have 1 postocular scale, 2 preocular scales, 1 loreal scale, 9 infralabial scales and 8 supralabial scales...

snout, as long as the parietals. The nasal is entire, in contact with the preocular. There are two postoculars, both in contact with the anterior temporal...

bordering the second supralabial scale, the absence of the loreal and preocular scales, a lone postocular scale, and the lack of a mental groove. The...

the snout, shorter than the parietals. Nasal vertically divided. One preocular, in contact with the posterior nasal. One or two postoculars. Temporals...

bordering the second supralabial scale, the absence of the loreal and preocular scales, a lone postocular scale, and the lack of a mental groove. It can...

of this species. B. barnesii has 19 scale rows at midbody. It has 2–3 preoculars. The ventrals number 208–271, and the subcaudals number 98–120. The dorsum...

which the nostrils are positioned. The circumorbital ring consists of 2–3 preoculars, 1–2 postoculars, and 1–2 suboculars that separate the eye from the supralabials...

four upper labials, the second and third touching the eye. It has one preocular. The mental is not in contact with the anterior chin shields. The dorsal...

garter snake. It has an oval-shaped head with two supralabial scales, two preocular scales, and a distinct black blotch on the dorsal surface of its neck...

The supraorbital ridge is smooth and there is a preorbital spine and a preocular spine. There are two spines on the suborbital ridge, a short spine under...

convex. Dorsum yellowish brown whereas ventrum blackish. Head dark with preocular spots. Mentum consists with compact long setae on anterior part. Pronotum...

stalked lateral eyes, a third, large median eye was located behind its preocular sclerite (H-element). Similar structures were evident in the fossils of...

as its distance from the rostral, much shorter than the parietals. One preocular, is in contact with the nasal. There are one or two postoculars, and 1+1...

eight or 9 upper labial scales, one of which enters the eye, two or three preocular scales, two to four postoculars, and one anterior temporal scale. The...

with a large slight oblique terminal mouth. The head armed with strong preocular, supraocular, postocular, and parietal spines. The space between the eyes...

the snout, as long as the parietals. Nasal divided, in contact with the preocular. One postocular. Temporals 1+1. Seven upper labials, third and fourth...

distance from the mouth. There are four upper labials, and there is no preocular. The frontal is five or six times as wide as a supraocular. C. schmidti...

third and fourth upper labials are in contact with the eye. There is a preocular present. Ventrally, C. doederlein is marked with dark crossbars, each...

of her specimen as well as additional material. Apterygon heads lack preocular slits and the female genital chamber has a cellular circular structure...

round or subelliptic pupil. The nostril is between two nasal scales. The preocular is usually absent, and the loreal and prefrontal scales enter the orbit...

and slightly distinct from the neck. The circumorbital ring includes 2 preoculars, 2 postoculars and 1–2 subocular scales. There are 6–7 sublabials. The...

have raised triangular projections, and the loreal scale touches the preocular scale in approximately one-third of specimens. There are 21–23 dorsal...

yellow with some scattered black speckling. Pareas tigerinus has a single preocular scale, with the post- and sub-ocular scales fused. The loreal scales do...

that differentiate it from other Lerista species, these include the two preocular scales, the nasal areas are in close contact that they appear to be touching...

over the rear of the eye. The is no preorbital spine, there is a single preocular spine and the suborbital ridge is smooth apart from 2 spines under the...

supralabial scale. 166–179 ventral scales and 58–70 subcaudal scales. A single preocular scale and 2–3 postocular scales. 10–12 supralabial and 12–15 infralabial...

knobs on each side. There are robust spines on the head with the nasal, preocular, postocular, tympanic and parietal spines being present and there are...

forming a short median suture. Supraocular very narrow. One large elongate preocular, contacting the posterior nasal, the internasal, the frontal, and the...

the mouth, and the labials are yellow. It may have one, two, or three preocular scales, and has three postoculars. There are seven or eight upper labials...

white. It has five series of large head shields. It lacks supraoculars, preoculars, and infraoculars. It has two precloacal pores. L. kisteumacheri is found...

along a vertical line on which the nostril is situated. Loreals: One Preoculars: One Postoculars: Divided into two equally sized shields Temporals: Divided...

scales for males and 148 for females. It has one postocular scale and one preocular that separates the single prefrontal from the eyes. Its skull has reduced...

little shorter than the parietals. Nasal entire, in contact with the preocular. One postocular. Temporals 1+1 (the first sometimes absent). Six upper...

Apostolepis niceforoi has the following scalation. There is a single preocular which contacts the nasal. There is no loreal. There are six upper labials...

head are very weak with only the nasal spines always present while the preocular, postocular and parietal spines are normally present while the supraocular...

6 or 7 soft rays. There are robust spines on the head and the nasal, preocular, postocular, tympanic and parietal spines are present while the supraocular...

nasal is semidivided, the cleft proceeding from the first upper labial. A preocular is present, which is narrower than the nasal or the ocular, and in contact...

prefrontal scales border the ocular scales while the loreal scales do not. One preocular scale and one postocular scale (which may or may not be fused with the...

shorter than the parietals. Nasal entire or imperfectly divided. One preocular, in contact with the nasal. One or two postoculars. Temporals 1+1. Seven...

much shorter than the parietals. Nasal divided, in contact with the preocular. Usually two postoculars. Temporals 1+1 or 1+2. Seven upper labials, third...

shorter than the parietals; loreal square or longer than deep; one or two preoculars; temporals 1+2 or 2+2; upper labials 9, fourth, fifth, and sixth entering...

large. The eyes are medium-sized. The circumorbital ring consists of 1–2 preocular scales, 1–2 postoculars and 1–2 suboculars that separate the eye from...

The dorsum is predominantly brown. A dusky brown or dark grey-brown preocular stripe runs from the nostrils to the eye, then along postocular region...

scales. On the head, there are usually 8 supralabials, 10 infralabials, 1 preocular and 2 postocular scales. The specific epithet elegans (Latin for "elegant")...

Nasal semidivided, the cleft proceeding from the first upper labial. Preocular much narrower than the nasal or the ocular, in contact with the second...

postnasal scales. Individuals have two subequal loreal scales and a single preocular scale with a moveable lower scaly eyelid. The iris and pupil are both...

snout. Broad supraocular horn present, which is in contact with upper preocular. Horn shape is wider than tall. Internasal shape slightly keeled. Canth...

and is beneath the overhanging snout. The nasal clefts also extend from preocular scale to nostril, or to rostral scale. The genus Anilios is recognized...

bordering the second supralabial scale, the absence of the loreal and preocular scales, a lone postocular scale, and the lack of a mental groove. The...

partly separating the prefrontals. No internasals; no loreal touching the preocular; seven supralabials, 3rd and 4th touching the eye; 1 anterior temporal...

Pectoral fin bright red. A symphyseal knob on the lower jaw is absent. Two preocular spines and two lachrymal spines are present. There are 9–11 supraocular...

scales are long. A loreal scale is present, separating the nasal and preoculars. The suboculars are separated from the supralabials. The mandible has...

fins compared to 20 or 21 in the longhead flathead, the possession of a preocular spine. The do not have the fleshy sensory tubes on the cheek region while...

slightly shorter than the parietals. Nasal entire, in contact with the preocular. Two postoculars, in contact with the anterior temporal. Seven upper labials...

and this is the clear difference from Parabembras robinsoni. A single preocular spine two robust lachrymal spines present. There are 6–8 supraocular spines...

or a fine pattern of interconnected darker scales. The species has a preocular transverse bar (a line of coloured scales in front of the eyes at the...

underside of tail, and first row of dorsal scales are yellowish. One preocular; one postocular; temporals 1+1.5 upper labials, 3rd and 4th entering the...

completely divided, the nasal cleft proceeding from the second upper labial. Preocular nearly as large as the ocular, in contact with the second and third upper...

bears strongly to moderately robust spines with spines on the nasal, preocular, supraocular, postocular, tympanic, parietal and nuchal bones; however...

needed] A. drummondhayi has dorsal scales arranged in 15 rows at midbody. Preoculars are absent. There are 2 postoculars which are in contact with the parietal...

elongated loreal scale does not touch the internasal scales, the lone preocular does not touch the frontal scale, the supraocular scale is in contact...

scales, one loreal scale that is distinct from the eye, an elongated preocular scale that touches the supraocular and the third supralabial scales, and...

relatively large, pointed head, The spiny head is armed with strong nasal, preocular, supraocular, postocular, tympanic, parietal and nuchal spines but there...

soft rays. The head has robust spines, somne very robust, the nasal, preocular, supraocular, postocular, tympanic and parietal spines are present, the...

(SVL) of 3.6–4.3 cm (1.4–1.7 in). The snout is narrow. There are three preoculars. The dorsal scales are not striated. There are apical pits on the dorsal...

characters. The mental is in contact with the anterior chin shields. A preocular is present. The third and fourth upper labials are in contact with the...

may have a groove that extends towards its upper edge. There are two preoculars and 2-4 postoculars. The loreal scale is single, but extends across the...

its distance from the end of the snout, shorter than the parietals. One preocular, in contact with the posterior nasal. One or two postoculars. A single...

Nasal extending over the eye, in contact with the small ocular. One preocular and one subocular. Eyes distinguishable. Four upper labials. Diameter...

caudal fin is truncate to weakly crescent shaped. On the head the nasal, preocular, postocular, tympanic and parietal spines are robust and present while...

following scalation. The dorsal scales are arranged in 17 rows at midbody. Preoculars are present, forming a part of the anterior border of the orbit of the...

well developed; eye distinguishable under the ocular; two superposed preoculars, the lower in contact with the labials; two small suboculars; two upper...

and rounded. The rostral scale is wide, half as wide as the head. The preocular is in contact with the second and third upper labials. C. biminiensis...

jaw present, which is the clear difference from Parabembras curta. Two preocular spine and single robust lachrymal spines present. There are 6–8 supraocular...

anterior edge of the Prefrontals. Loreals: Elongated and touch the eyes. Preoculars: Absent Postoculars: Divided into two shields. Temporals: Small and divided...

through the nostril. The nasal scales contact the first three labials. The preocular scale of Malayotyphlops canlaonensis is narrowed to a point dorsally and...

scale. A single loreal is present. The circumorbital ring consists of 2–3 preoculars, 1–2 postoculars and 1–2 suboculars. There are 6 supralabials and 9–10...

narrower bills, reduced postocular streaking, and an absence of the dark preocular spot found in those species. In the black-capped antwren (Herpsilochmus...

burrowing snake. In A. copei, the dorsal scales are in 17 rows at midbody. Preoculars are absent. There are 2 postoculars in contact with the parietal. The...

Infralabials: 8–9 Anterior temporals: 1 or rarely 2; rectangular and elongate Preoculars: 1 (occasionally absent) Maxillary teeth: 27–30, with the last two moderately...