Javelin sand boa

Description

Eryx jaculus,known commonly as the javelin sand boa,is a species of snake in the Boidae family.It is the type species of the genus Eryx.1⁄2 in) in total length (including tail).Coloring varies greatly.Dorsally,it may be grayish,tan,brownish,or reddish,with darker blotches or bars in an irregular network.It usually has a dark streak from the eye to the corner of the mouth.Ventrally it is whitish or yellowish.It is heavy-bodied and has a short blunt tail.The ventrals are very narrow,less than ⅓ of the width of the body.The rostral is large and broad with an angular horizontal edge.The eye is separated from the labials by one or two rows of small scales.There are 10-14 upper labials.The dorsal scales are in 40-50 rows,smooth anteriorly,but weakly keeled posteriorly.There are 165-200 ventrals,and 15-34 subcaudals.