ELA POCHRUS.—LIOPHIS. 107 
mutilated). The dentition is distinctly diacranterian. Ground-colour reddish, with 
numerous black rings entirely encircling the body and nearly as broad as the inter- 
‘spaces, which again are spotted in an irregular fashion; the rings on the tail are closer 
together and more irregular. Head black, with a broad yellow band across the 
occipitals, 
Total length 22 inches; length without the tail (which is mutilated) 134 inches. 
3. Elapochrus dimidiatus. 
Pliocercus dimidiatus, Cope, Proc. Ac. N. Se. Phil. 1865, p. 190; Journ. Ac. N. Sc. Phil. 1875, 
p- 188; Bull. U.S. Nat. Mus. no. 82, p. 79 (1887). 
Hab. Nicaracva (Cope); Costa Rica (Cope). 
4. Elapochrus euryzona. 
Pliocercus euryzonus, Cope, Proc. Ac. N. Sc. Phil. 1862, p. 73, and 1871, p. 200. 
Liophis (Cosmiosophis) splendens, Jan, Arch. per la Zool. 1863, p. 379, and Iconogr. Ophid. xviii. 
t. 5. fig. 1; Bouleng. Ann. & Mag. N. H. 1882, ix. p. 461. 
Hab. Panama, Darien (Smiths. Inst.).—CotomBia ; Ecuapor (Whymper). 
HENICOGNATHUS. | 
Enicognathus, Dum. & Bibr. Erpét. vii. p. 328 (1854). 
1. Henicognathus annulatus, 
Enicognathus annulatus, Dum. & Bibr. Erpét. vii. p. 335, t. 80; Jan, Iconogr. Ophid. xvi. t. 4. 
fig. 3; Sumichrast, Bull. Soc. Zool. Fr. 1880, p. 181; Bocourt, Miss. Sc. Mex., Rept. p. 626, 
t. 40. figg. 6, 6 a-e. 
Hab. Mexico, Vera Cruz, Tabasco, Atitlan, Tehuantepec (Sumichrast) ; GuaTEMALA, 
Vera Paz (Salvin). 
LIOPHIS. 
Liophis, Wagi. Nat. Syst. Amphib. p. 187 (1830). 
1. Liophis epinephelus. (Tab. XXXVII. fig. B.) 
Liophis epinephelus, Cope, Proc. Ac. N. Sc. Phil. 1862, p. 78, and Journ. Ac. N. Se. Phil. 1857, 
p. 186. 
Hab. Costa Rica, Cartago (Mus. Brit.), San José (Smiths. Inst.), Irazu, Rio Sucio 
(Rogers); Panama, Chiriqui (Champion), Truando (Smiths. Inst.). 
Scales in seventeen rows, some with, the majority without, pits; head rather 
depressed. Anterior frontals two-thirds the size of posterior; vertical longer than 
broad, with the lateral margins slightly convergent ; occipitals shorter than the vertical 
and posterior frontals together ; loreal short, one ante-ocular, not reaching the vertical, 
two postoculars; eight upper labials, the fourth and fifth entering the orbit ; temporals 
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