I lo On ncir Snakes in the British Museum, 



in sular, ilir prefrontal in < • » > 1 1 i i » * - 1 with the third upper 



labial; temporals] I I ; seven upper labials, third and fourth 

 entering the eyej four lower labials in contact with the 

 anterior chin-shields, which are slightly shorter than the 

 posteriori Scales in Lfi rows. Ventrals 21 I ; anal divided; 

 subcauduls 27, the six anterior entire. Tail ending in an 

 obtuse point. Ten triads of blauk annuli on the body, the 

 oentral annulus broadestj its width equal to the space sepa- 

 rating the triads, white spaces (in spirit) with Mack dots; on 

 i, In- belly, ili" black bars nearly as broad as the white; one 

 triad on the tail ; head black above, with a white cross-baud 

 behind the eyes, the posterioi bhree-tifths «>i the frontal ami 

 the anterior two-thirds "I' the parietals iuvolved in it. 



Total length 365 mi... ; tail 



A single female specimen from Venezuela, received from 

 l>. I<\ Vverni L900. 



Appears to oome very near E. gravsnhorstii, Jan, which i 

 only known to me from the description and figure. 



Leptognathus hammondu. 



Body Blender, strongly compressed. Eye large Rostral 

 nearly twice as broad as deep, not visible from above ; inter- 

 nasals about hall as I". I" as the prefrontals; frontal as long 

 as broad, as long as its aistance from the end <>!' the snout, 

 much shorter than the pai ietal i ; nasal divided ; no preocular, 

 loreal ami prefrontal entering the eye ; two large postooulars, 

 will. ;i small third between them ami the eye; temporals 

 I i i or l f-2; eight upper labials, third ami fourth or 

 second, third, ami fourth entering the eye, sixth very 

 I ii.:, i lowei labial in ooutaot will, lis fellow behind the 

 symphysial; iw<> pairs of chin-shields, the anterior as long as 

 broad. Scales in L5 rows, vertebrals enlarged, as long as 

 I. u>ad on ii." posterioi half of the body. Ventrals 210 ; anal 

 entire ; subcaudals L21. 16 black annuli mi the body, to on 

 the tail, separated by muoh narrower while ones ; head black, 



wnli while vei niienialion on I ho Upper head-shields, on the 

 sides Of the SnOUt, and on the chin, while on the temples and 



on the oooiput . 



Total length HO mm. ; lad L20. 



A single female specimen from Quatea, Western Ecuador, 

 altitude 2900 Eeet, iron, the collection of Mr. <i. Hammond. 



Near /.. ,ir,iriiis, Blgr., likewise Erom Western Ecuador, 



win ,i ll resen. hie, in I he eoloial ion , but dilleienl in ihe 



labial and temporal scutellatiou and in the more enlarged 



