Snakes in the British Museum. 109 



Two specimens from Am Island, from Mr. H. Rolle's 

 collection. 



Allied to C. boulengeri, Houx, but frontal shield apparently 

 smaller and 24 scales round the body instead of 20. 



Zamenis hotsoni. 



Snout moderately prominent, obtuse. Eye moderately 

 large. Rostral broader than deep, the portion visible from 

 above measuring one-fourth or one-third its distance from the 

 frontal ; internasals as long as or a little shorter than the 

 prefrontals ; frontal broader than the supraocular, once and a 

 half to once and two-thirds as long as broad, longer than its 

 distance from the end of the snout, shorter than the parietals; 

 loreal as long as deep ; one preocular, not reaching the 

 frontal, with a subocular below it ; two postoculars ; tem- 

 porals 1 + 2 ; seven upper labials, third and fourth entering 

 the eye, fourth in contact with the anterior temporal ; four 

 lower labials in contact with the anterior chin-shields ; poste- 

 rior chin-shields as long as or a little longer than the anterior, 

 separated from each other by scales. Scales smooUi, with a 

 single apical pit, in 17 rows. Ventrals not angulate laterally, 

 196 ; anal divided j subcaudals 90. Pale fawn-colour or 

 greyish above, each scale, except the outermost, with a black 

 central shaft ; head without markings ; upper lip, pre- and 

 postoculars, outer row of scales, and lower parts yellowish 

 white. 



Two specimens, the larger measuring about 500 mm., from 

 Shiraz, presented by J\lajor J. E. B. Hotson to the Bombay 

 Natural History Society. The smaller specimen is now in 

 the British Museum. 



Distinguished from Z. gemonensis and Z. dahlii by the 

 smaller eye, from the former by the single scale-pits, from 

 tiie latter by the number of rows of scales on the bodj^ and 

 tlie less slender form. 



Jalaps omissus. 



Eye a little shorter than its distance from the mouth. 

 Snout obtusely pointed. Rostral large, nearly as deep as 

 broad, its upper portion one-third its distance from the frontal ; 

 internasals three-fifths the length of the prefrontals ; frontal 

 twice as long as broad, as long as its distance from the end 

 of the snout, shorter than the parietals, which are as long as 

 their distance from the end of the snout ; one pre- and 

 two postoculars ; [)Osterior nasal narrowly .sc[»arated from the 



