89. HYPSIGLENA. A 
b. Her. 9 (V. 168; C. 39), Mezquitaldel Oro, Dr. A.C. Buller [C.]. 
Zacatecas, 
€. 2 (V. 16240. 51): Jalisco. F. D. Godman, Esq.! P.}. 
4, Hypsiglena discolor. 
Leptodira discolor, Giinth. Proc, Zool. Soc. 1860, p. 317. 
Hypsiglena discolor, Cope, Bull. U.S. Nat. Mus. no. 32, 1887, p. 78; 
Giinth. Biol. C-Am., Rept. p. 137, pl. xlix. fig. 1 (1894). 
Rostral nearly twice as broad as deep, just visible from above ; 
internasals shorter than the prefrontals; frontal slightly longer 
than broad; loreal as long as deep or slightly longer than deep; one 
pre- and two postoculars; temporals 1+2; seven or eight upper 
labials, third and fourth or fourth and fifth entering the eye; anterior 
chin-shields as long as or a little shorter than the posterior. Scales 
in 19 rows. Ventrals 173-180; anal divided; subcaudals 85-89. 
Above with blackish cross bars separated by pale yellowish-brown 
interspaces ; upper surface of head dark, nape yellowish; labials 
yellowish with blackish sutures ; uniform yellowish white beneath. 
Total length 560 millim.; tail 155. 
Mexico. 
a-b. 5 (V. 180,173; C. 85, 89). Oaxaca. M. Sallé[C.].  (‘Types.) 
5. Hypsiglena latifasciata. 
Hypsiglena latifasciata, Giinth. Biol. C.-Am., Rept. p. 138, pl. xlix. 
fir, 2 (1894). 
Rostral nearly thrice as broad as deep, scarcely visible from 
above; internasals a little shorter than the prefrontals; frontal 
nearly twice as long as broad, with concave sides; loreal deeper 
than long; one preocular, with a small subocular below it; two 
postoculars; temporals 1+2; eight upper labials, fourth and fifth 
entering the eye; anterior chin-shields shorter than the posterior. 
Scales in 21 rows. Ventrals 186; anal divided ; subcaudals czca 
80 (end of tail absent in the specimen). Dark brown above, with 
ten widely separated whitish cross bands; head whitish, spotted 
with brown, except on the occiput; beneath dirty white. 
Total length 350 millim. 
South Mexico. 
a. 9 (V.186; C.?). S. Mexico. F. D. Godman, Esq. [P=] <(Bypes) 
6. Hypsiglena ornata. 
Comastes ornatus, Bocourt, Bull. Soc. Philom. (7) viii. 1884, p. 141. 
Hypsiglena ornata, Cope, Bull. U.S, Nat. Mus. no, 32, 1887, p. 78. 
Sealing as in H. torquata, but body feebly compressed, ventrals and 
subcaudals more numerous, rostral smaller, and eye larger. Hight 
upper labials, fourth and fifth entering the eye. Ventrals 185-189 ; 
subcaudals 84-93. Yellowish above, with a dorsal series of large 
brown spots, and smaller spots alternating with them on the sides. 
Total length 260 millim.; tail 87. 
Isthmus of Darien. 
p 2 
