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In certain regions, presence or absence of certain scales may be a quick way to distinguish non-venomous and venomous snakes, but used with care and knowledge of exceptions. For example, in Myanmar , the presence or absence of loreal scales can be used to distinguish between relatively harmless Colubrids and lethally venomous Elapids . [ 32 ]
In snakes, the ventral scales or gastrosteges are the enlarged and transversely elongated scales that extend down the underside of the body from the neck to the anal scale. When counting them, the first is the anteriormost ventral scale that contacts the paraventral (lowermost) row of dorsal scales on either side. The anal scale is not counted. [1]
The top of the head is covered with small obtusely keeled scales, except for the nasals and internasals which are enlarged. Interorbitals: 8 to 10. Circumorbitals: 10 to 15. The eye is separated from the labials by one or two rows of scales. Supralabial scales: 12 to 14. Dorsal scales tubercularly keeled, in 40 to 49 rows. Ventral scales: 162-186.
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 ...
See snake scales for terminology used Illustration of the scale pattern on a juvenile Juvenile green keelback in Pune, India Juvenile green keelback in the wild. R. plumbicolor is stout and viper-like in body structure, and about 2 ft (61 cm) in total length (including tail) when fully grown. The eye is moderately large.
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In contrast with many other snakes found in the region, these scales are flat (not keeled). This gives the snake a smooth texture to the touch, from which it gets its common name. The ventral scales number 150-164 in males and 162–200 in females. The anal scale is divided (rarely single) and the subcaudal scales are paired. Males have 54–70 ...
The snake is brown to olive with narrow, irregular cross-bands or blotches of darker brown. The belly surfaces are greenish-grey or olive-cream, often with darker blotches. The mid-body scales have a raised keel or carinated appearance. The coloration and scale structure has led to some confusion with the non venomous keelback snake. It grows ...