nettJ Batnichians and Reptiles. 57 



Ehips calamus. 



Head much depressed. Eye not lialf as long as its distance 

 from tlie moutli. Rostral much broader than deep; frontal 

 scarcely broader than the supraocular, 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 prai- and one postocular; 

 anterior temporal absent, the sixth upper labial forming a 

 long sutuie with the temporal; seven upper labials, third 

 much larger tlian fourth, third and fourth entering the eye; 

 three lower labials in contact with the anterior chin-shields, 

 which are a little shorter than the posterior and separated 

 from the symphysial. Scales in 15 rows. Ventrals 289 ; 

 anal divided ; subcaudals 26 (II single). Tail ending very 

 obtusely. 72 black annuli, separated above by narrow 

 brownish interspaces closely spotted with black, beneath by 

 broader white (red ?) bars ; snout black, followed by a white 

 area extending to near the posterior extremity of the parietal 

 shields ; a broad black nuchal band. 



Total length 500 raillim. ; tail 25. 



A single female specimen from St. Javier, 60 feet. 



Leptoijnalhus gracilis. 



Body slender, strongly compressed. Eye large. Rostral 

 twice as broad as deep, not visible from above ; internasals 

 about half as long as the prjefrontals ; frontal as long as 

 broad, as long as its distance from the end of the snout, 

 shorter than the parietals ; nasal divided ; no prgeocalar, loreal 

 and iirajlroiita! entering the eye; two postoculars ; temporals 

 2 + 2; nine upper labials, third, fourth, and fifth entering the 

 eye ; first lower labial in contact with its fellow behind the 

 symphysial ; two pairs of chin-shields, the anterior as long as 

 broad. JSc.iles in 15 rows, vertebrals very feebly enlarged. 

 Ventrals 197-208; anal entire; subcaudals 117-129. 22 or 

 24 large black blotches encircle the body, separated by 

 narrower pale brownish white-edged spaces, which, on the 

 posterior part of the body, may bear small black spots or 

 vermiculations; upper head-shields and lips black, back of 

 head yellowish; a black longitudinal streak on the occiput 

 and another on the chin. 



Total length 770 millim.; tail 240. 



Two male specimens from St. Javier, 60 feet. 



