414 COLtrBEIBiE. 



tt Ventrals 241 or more; anterior temporal large 

 and deep. 

 Ventrals 241-262 ; suboaudals 30-39 . . 22. lemniscatus, p. 430. 

 Ventrals 290-308 ; subcaudals 35-45 . . 23. filiformis, p. 430. 



ttt Ventrals 210 or more ; anterior temporal very 

 narrow, sometimes absent. 



Ventrals 210-278 24. mipariitus, p. 431. 



Ventrals 303 25. fraseri, p. 432. ■ 



3. Symphysial in contact with the anterior chin-shields. 



Ventrals 255-268; temporals 1 + 1; 

 frontal much broader than the supra- 

 ocular 26. mentdlis, p. 432. '- 



Ventrals 258 ; temporals 1 + 1; frontal 



little broader than the supraocular . . 27. aneoralis, p. 432. 



Ventrals 240-315 ; no anterior temporal. 28. nardwccii, Tp. 433. ^ 



l^ 1. Elaps surinamensis. 



Seba, Thes. ii. pi. Ixxxvi. fig. 1 (1735). 



Elaps surinamensis, Cuv. JR. An. ii. p. 84 (1817) ; ScJileg. Phys. 



Serp. ii. p. 445, pi. xvi. flgs. 8 & 9 (1837), and Abbild. p. 137, 



pi. xlvi. fig. 9 (1844) ; Bum. 8f Bibr. vii. p. 1224 (1854) ; Giinth. 



Cat. p. 234 (1858) ; Jan, Icon. Gin. 42, pi. iii. fig. 1 (1872) ; 



Cope, Journ. Ac. Philad. (2) viii. 1876, p. 182. 



Eye measuring a little more than half its distance from the mouth. 

 "Eostral a little broader than deep ; frontal very narrow, narrower 

 than the supraocular, at least twice as long as broad, as long as 

 its distance from the rostral or the end of the snout, shorter than 

 the parietals ; latter longer than their distance from the internasals ; 

 one prae- and two postoculars ; temporals 1 + 2 ; seven upper labials, 

 fourth entering the eye ; four lower labials in contact with the 

 anterior chin-shields, which are as long as or longer than the 

 posterior. Scales in 15 rows. Ventrals 167-182 ; anal divided ; 

 subcaudals 33-37. Red, with black annuli disposed in threes, the 

 middle one broad, separated by narrow yeUow interspaces ; 7 or 8 

 sets of annuli on the body ; the red scales dotted with black ; head 

 red above, with the shields black-edged, followed by a black cross- 

 band behind the parietals. 



Total length 740 millim. ; tail 95. Grows to 1900 millim. 



Venezuela, Guianas, Northern Brazil, N.E. Peru. 



a. S (V. 170; 0.37). British Guiana. 



b. Hgr. (J (V. 167 ; 0. 36). Para. Dr. E. A. Gbldi [P.]. 



2. Elaps heterochilus. 



Elaps heterochilus, Mocquard, Bull. Soc. Philom. (7) xi. 1887, p. 39, 

 Snout narrow. Rostral broader than deep ; frontal once and a 



