LEPTOPHIS. 129 
LEPTOPHIS. 
Leptophis, Bell, Zool. Journ. ii. p. 328 (1826). 
1. Leptophis mexicanus. 
Leptophis mexicana, Dum. & Bibr. Erpét. vii. p. 586; Cope, Journ, Ac. N. Sc. Phil. viii. p. 133. 
(1875) ; Jan, Iconogr. Ophid. xlix. t. 6. fig. 3. 
Ahetulla mexicana, Giinth. Cat. Col. Sn. p. 154; Salv. P. Z.S. 1860, p. 457. 
Hapsidophrys mexicanus, Cope, Proc. Am. Phil. Soc. xxii. p. 382 (1885). 
Hab. Mexico, Tampico, Amula, Teapa (H. H. Smith), Atoyac (Richardson), Jalisco, 
north of the Rio de Santiago, Jicaltepec (Commiss. Geogr.), Vera Cruz, Tehuan- 
tepec (Sumichrast), Santo Domingo de Guzman (A. C. Buller), Yucatan (Jfus. 
Brit.) ; British Honpvuras, Stann Creek (Rev. J. Robertson), Belize (Mus. Brit.) ; 
GuatremMaLa, Lanquin (Salvin); Nicaragua (Cope) ; Costa Rica (Van Patten). 
2. Leptophis occidentalis. 
Ahetulla occidentalis, Ginth. P. Z. 8S. 1859, p. 412. 
Leptophis occidentalis, Cope, Bull. U. 8S. Nat. Mus. no. 382, p. 69. 
Hab. Panama, Darien and Panama (Cope).—WestERN Ecuapor (fraser). 
8. Leptophis modestus. (Tab. XLVIII.) 
Ahetulla modesta, Giinth. Ann. & Mag. N. H. 1872, ix. p. 26, t. 6. fig. C (head). 
Philothamnus modestus, Cope, Bull. U.S. Nat. Mus. no. 382, p. 69. 
Hab. Guatemaa, Rio Chisoy, below the town of Cubulco (Salvin). 
Scales in fifteen rows, very strongly keeled, except those in the outermost series. 
Ventrals 171; anal bifid; subcaudals 171. Snout depressed, not pointed. Rostral 
shield just reaching to the upper surface of the crown; anterior frontals subtruncated 
in front, about half the size of the posterior. Vertical not much longer than broad, 
rather shorter than the snout or than the occipitals, which are truncated behind. 
Loreal longer than deep. Anteocular extending to the upper surface of the crown, but 
not reaching the vertical; two small and short postoculars. Hight upper labials, the 
fourth and fifth of which enter the orbit. ‘Temporals 1+). Eye rather smaller 
than in the other species of this genus, a little more than one-half of the length of the 
snout. Uniform greenish-olive above, light green below. A narrow black band from 
the eye along the suture between the labials and temporals. 
The posterior three or four teeth are larger than the preceding, but not separated 
from them by an interspace. 
The single specimen known is 52 inches long, the tail measuring 22. 
BIOL. CENTR.-AMER., Rept., July 1894. *17 
