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When counting dorsal scales, numbers are often given for three points along the body, for example 19:21:17. These numbers correspond to the number of dorsal scales around the body at a head's length behind the head, at midbody and at a head's length before the vent. If only one number is given, it is for the midbody count. [1] Dorsal scale are ...
The scales on the body of the snake are called the dorsal or costal scales. Sometimes there is a special row of large scales along the top of the back of the snake, i.e., the uppermost row, called the vertebral scales.
This snake grows to an average of about .5 to 1 m. A fossorial species, the head is wedge-shaped and narrow with little neck delineation, which makes it easy to push through the soil. Its most defining characteristic is its iridescent, highly polished scales that give this snake its common name (sunbeam snake). The dorsal scales a layer of dark ...
The shape and number of scales on the head, back and belly are characteristic to family, genus and species. Scales have a nomenclature analogous to the position on the body. In "advanced" (Caenophidian) snakes, the broad belly scales and rows of dorsal scales correspond to the vertebrae, allowing scientists to count the vertebrae without ...
The loreal scale is at least twice as long as it is high. Two postoculars are present; the temporals are 1+2. Seven upper labials (rarely six) occur, the third and fourth (or third) of which enter the orbit; the three lower labials contact the single pair of chin shields. The dorsal scales are smooth, in 17 rows. The ventrals are 146-161 in count.
Scale arrangement includes 23 dorsal scale rows at midbody (rarely 19 or 21), 211-250 ventral scales, a divided anal scale, and 60-91 paired subcaudal scales (Schultz 1996; Arnold 2002). Ventral scales are sharply angled where the underside meets the side of the body, which enhances the species' climbing ability. Lifespan is estimated at 25 to ...
The Narrow-banded burrowing snake has cream to white coloured ventral scales, of which there are 140-175, and 15-30 subcaudal scales of which are divided. [2] The anal scale is also divided. [ 2 ] The dorsal scales are brightly coloured with a pale reddish-brown to cream coloured background and black-tipped scales that form 50 or more narrow ...
The dorsal scales, in addition to the strong primary keel, have secondary keels and tubercles, but no apical pits. The dorsal scales are arranged in 15 rows at midbody (in 17 rows on the neck). The ventrals number 203-241. The anal plate is undivided. The subcaudals number 45-61, and are divided (in two rows). [2]