110 COLTJBRID^. 



passing through the eye ; labials and chin yellowish white ; ventrals 

 brown, copper-coloured, with darker dashes. 



Total length 520 millim. ; tail 205. 



Upper Amazon. 



6. Leptophis saturatus. 



Leptophis saturatus, Cope, Journ. Ac. Philad. (2) viii. 1876, p. 133. 

 Hapsidophrys saturatus, Cope, Proc. Amer. Philos. Soc. xxiii. 1886, 

 p. 279. 



Head short and wide ; snout not longer than the diameter of the 

 eye. Frontal rather broad ; nasals not elongate ; loreal present, 

 nearly twice as long as deep ; one praeocular, nearly reaching the 

 frontal ; two postoculars ; temporals 1 + 2 ; nine upper labials, fifth 

 and sixth entering the eye. Scales in 15 rows, one on each side of 

 the median vertebral weakly keeled. Ventrals not angulate, 160 ; 

 anal divided ; subcaudals 133. Indigo-blue (in spirits), very dark 

 on head and spine ; lips dark green ; a blackish shade above the 

 labials behind the eye. 



Total length 880 millim. ; tail 340. 



Sipurio, Costa Bica. 



7. Leptophis diplotropis. 



Ahsetulla diplotropis, Gtinth. Ann. 8f Mag. N. H. (4) ix. 1872, p. 25, 



pi. vi. fig. A. 

 Hapsidophrvs diplotropis, Cope, Proc. Amer. Philos. Soc. xxiii. 1886, 



p. 279. 

 Leptophis diplotropis, Giinth. Biol. C.-Am., Rept. p. 130 (1894). 



Kostral broader than deep, just visible from above ; internasals 

 shorter than the proefrontals ; frontal once and a half to once and 

 two thirds as long as broad, as long as its distance from the end of 

 the snout, shorter than the parietals ; nasal elongate, divided ; loreal 

 usually present, once and a half to thrice as long as deep ; one 

 praocular, not reaching the frontal ; two postoculars ; temporals 

 1 + 2 ; eight upper labials, fourth and fifth entering the eye ; four or 

 five lower labials in contact with the anterior chin-shields, which 

 are shorter than the posterior. Scales in 15 rows, those of the 

 series on each side of the vertebral with a strong keel. Ventrals 

 feebly angulate laterally, 165-186; anal divided ; subcaudals 126- 

 166. Olive or pale green above, with or without oblique black 

 cross bars ; scales of the vertebral series yellowish or pale olive ; 

 a black stripe on each side of the head and neck, passing through 

 the eye ; two black lines following the dorsal keels ; upper lip and 

 lower parts pale greenish yellow. 



Total length 1250 millim. ; tail 440. 



Western Mexico. 



o-c.Hgr. $ (V. 181,175, Tehuantepec. F. Sumichrast [C.I 



179; 0. 145, 133, 146). (Types.) 



d. Hgr. $ (V. 179; C. Tapana, Tehuautepec. F. Sumichrast [C.]; 

 163). F. D. Godman & 



0. Salvin, Esqs. [P.]. 



