264 COLUBRID. 
1. Elachistodon westermanni. 
Elachistodon westermanni, Reinh. Overs. Dansk. Vid. Selsk. Forh, 
1863, p. 206; Giinth. Rept. Brit. Ind. p. 444 (1864); Blanf, 
Journ, As. Soc. Beng. xliv. 1875, p. 207 ; Bouleng. Faun. Ind., 
Rept. p. 363 (1890). 
Rostral twice as broad as deep, just reaching the upper surface 
of the head; internasals and preefrontals subequal in size; frontal 
rather longer than broad, as long as its distance from the end of 
the snout, shorter than the parietals ; loreal small, longer than deep, 
entering the eye; a small preocular above the loreal; two post- 
oculars; two very long temporals ; six or seven upper labials, third 
and fourth entering the eye; three pairs of large chin-shields. 
Scales in 15 rows. Ventrals 210-217; anal eatire; subcaudals 
59-65. Brown above, with a yellowish vertebral stripe ; a yellowish 
stripe commences on the snout and runs along each side of the head 
to the temporals and the angle of the mouth; an angular yellowish 
cross-band on the nape ; lower parts yellowish. 
Total length 784 millim.; tail 114. 
Bengal. 
Series C. PROTEROGLYPHA. 
Divided into two subfamilies :— 
7. Hydrophiine.—Tail strongly compressed, with the neural 
spines and hypapophyses very much developed. 
8, Elapine.—Tail cylindrical. 
Poisonous, the poison being conveyed mainly through the anterior 
maxillary teeth, which are so folded as to appear hollow or per- 
forated. 
Subfam. 7. HY DROPHIINA. 
Hydri, l, Ordn, Rept. p. 49, 1811, 
Hydrophide, part., Boie, Isis, 1827, p. 510. 
ar ya part., Lesson, in Bélanger, Voy. Ind. Or., Rept. p. 820, 
Hydride, Bonaparte, Mem. Acc. Torin. (2) ii, p. 898, 1839, 
Hydride, part., Gray, Cat. Sn. p, 35, 1849. 
Platycerques, Dumeril, Mém, Ac. Se. xxiii. p, 519, 1853; Duméril 
§ Bibron, Erp. Gén. vii. p. 1507, 1854, 
Hydrophidw, Cope, Proc. Ac. Philad. 1859, p. 838. 
Hydrophide, Jan, Elenco sist. Ofid. p. 107, 1868. 
Hydrophidew, Giinther, Rept. Brit. Ind. p. 352, 1864. 
Hydrophide, Cope, Proc. Amer, Philos. Soc, xxiii, p. 480, 1886. 
Hydrophiine, Boulenger, Faun. Ind., Rept. p. 893, 1890. 
Tail strongly compressed, oar-shaped, with the neural spines and 
