3. LEPI0SNATHT7S. 457 



•shield; lower parts whitish, dotted and lineolated with dark 

 Tjrown. 



Total length 630 millim. ; tail 195. 



Brazil. 



o. (J (V.197; C. 110). Santos. Dr. J. G. Fischer. (Type.) 



14. Leptognathus viguieri. 



Leptognathus -viguieri, Bocourt, Bull. Soc. Philom. (7) viii. 1884, 



p. 136. 

 ? Leptognathus brevis, Dum. Sr Bibr. vii. p. 476 (1854) *. 



Eye large. Nasal divided ; loreal bordering the eye ; no prse- 

 ociilar,but a small subocular below the loreal; three postoculars ; 

 nine upper labials, fourth and fifth entering the eye ; first lower 

 labial in contact with its fellow behind the symphysial ; two pairs 

 of chin-shields.' Scales in 15 rows, vertebrals feebly enlarged. 

 Ventrals 196 ; anal entire ; subcaudals 114. Reddish yellow 

 above, with large brown spots, mostly forming complete annuli ; 

 head purplish black above ; temples and nape yellow. 



Total length 570 millim. ; tail 170. 



Isthmus of Darien. 



15. Leptognathus annulata. 



Leptognathus annulatus, Gunth, Ann. Sf Mag. N. H. (4) ix. 1872, 

 p. 30, and Biol. C.-Am., Bept. p. 141, pi. xlix. fig. C (1895). 



Body very slender, strongly compressed. Eye large. Rostral 

 small, nearly as deep as broad, not visible from above ; internasals 

 one third the length of the prefrontals ; frontal a little longer than 

 broad, a little longer than its distance from the end of the snout, 

 much shorter than the parietals ; nasal entire ; loreal once and a 

 half as long as deep, bordering the eye ; no preeocular ; praefrontal 

 entering the eye ; a small subocular below the loreal ; two post- 

 oculars ; temporals 1 -|- 2 ; seven or eight upper labials, fifth and 

 sixth entering the eye ; four pairs of chin-shields, the anterior very 

 small and in contact with the symphysial, the second pair large 

 and much longer than broad. Scales in 15 rows, vertebrals 

 moderately enlarged. Ventrals 164; anal entire ; subcaudals 113. 

 Body with dark brown rings, separated by interspaces of pale 

 brown above, of white beneath ; head spotted with brown, with 

 two elongate large brown spots on the parietal shields. 



Total length 440 millim. ; tail 150. 



Costa Rica. 



a. Hgr. (V. 164; 0. 113). Cartago. (Type.) 



* M. Bocourt, who haB kindly supplied me with additional information on 

 the type of L. viguieri, informs me that the type of L. brevis had disappeared 

 from the Paris Museum as early as 1862. 



