71. lEPIOFHIS. Ill 



e. S (V. 180; C.P). Santo Domingo de Dr. A. 0. Buller[0.]. 



Guzman. 

 /. Head and neck. La Laguna, Sierra de Dr. A. C. BuUer [C.j. 



Alica. 

 jr-i. d (V. 171, 167; C. Amula, Guerrero. Mr. H.H. Smith [0.1; 



141, 144) & $ (V. 165 ; F. D. Godman, Esq. 



0.126). [P.]. ' ^ 



k-l. d (Y. 178; C?) & Presidio, near Mazat- Mr. A. Forrer [0.1. 



2 (V. 178; 0.149). Ian. 



m-n. d (V. 185 ; 0. 160) Trea Marias Ids. Mr. A. Forrer [0.1. 



&hgr.(V. 186; 0.166). 



8. LeptopMs bilineattis. o^t^/o J V 9 



Diplotropis bilineata, Giinth. Ann. Sr Mag. N. S. (4) ix. 1872, p. 24, 



pi. vi. fig. B. 

 LeptopHsbilineatus, Cope, P)-oc. Amer. Philos. Soc. xxiii. p. 279; 



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



Eostral broader than deep, just visible from above ; internasals 

 as long as tbe preefrontals ; frontal once and a half as long as 

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

 the parietals ; nasal moderately elongate, divided ; loreal present, 

 twice as long as deep ; one praeocular, not quite reaching the frontal ; 

 two postoculars ; temporals 1+2; eight or nine upper labials, 

 fourth and fifth (or fifth and sixth) entering the ej^e ; 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, 144; anal divided. Bright green above, light greenish 

 beneath ; two black lines following the dorsal keels ; a very indis- 

 tinct dark streak on each side of the head, passing through the 

 eye. 



Total length 910 millim. 



Costa Rica, Nicaragua, Tehuantepec. 



a. S (V. 144; 0.?). Costa Rica. 0. Salvin, Esq. [P.]. 



(Type.) 



9. Leptophis occidentalis. (Piatb III. fig. 2.) 



Deadrophis liocercus, part., Schleg. Fhys. 8erp. ii. p. 224 (1837) ; 



Quicken, in Gay, Hist, de Chile, Zool. ii. p. 88 (1854). 



liocercus, Berthold, Abh. Ges. Ootting. iii. 1847, p. 11. 



Leptophis liocercus, part.. Sum. Sr Bibr. vii. p. 533 (1854). 



AheetuUa liocercus, part., Giinth. Cat. p. 153 (1858). 



occidentalis, Giinth. Proc. Zool. Soc. 1859, p. 412 ; Peters, Mon, 



Berl. Ac. 1873, p. 607. 

 Thrasops occidentalis, Cope, Proc. Ac. Philad. 1860, p. 557. 



prsBstans, Cope, Proc. Ac. Philad. 1868, p. 809. 



Leptophis prsestans. Cope, Journ. Ac. Philad. (2) viii. 1876, p. 138 ; 



GiJmth. Biol. C.-Am., Kept. p. 130 (1894). 

 Thrasops (AhaetuUa) sargii, Fischer, Arch. f. Nat. 1881, p. 229, 



pi. xi. figs. 7-9. 

 Leptophis sargii. Cope, Proc. Amer. Philos. Soc. xxiii. 1886, p. 279. 

 occidentalis, Cope, Proc. Amer. Philos, Soc. xxiii. 1886, 



p. 279. 



