98 AUSTRALIAN SNAKES. 
ENHYDRINA. Gray. 
Differing from Hydrophis only by having a deep, longitudinal 
notch in front of the lower jaw. 
Only one species is known. 
Beneat Sea Snake. LEnhydrina bengalensis. 
Enhydrina bengalensis, Gray, Viper. Snakes, p. 48, and Giinther, Rept. Brit. India, 
p. 381. 
Seales in 48 rows. 
Abdominals, 284 to 314. 
Total length, 48 inches. 
New-born young snake, 10} inches. 
Habitat, from the Sea of Bengal to the Coast of New Guinea. 
PHLAMIS. 
Pelamis, sp. Daud. 
Head flat, with very long, spatulate snout ; neck rather stout ; body 
of moderate length. Nasal shields contiguous, longer than broad, pierced 
by the nostril posteriorly ; only one pair of frontals. Scales not imbricate: 
not polished, tubercular or concave. Ventral shields none, or very narrow. 
Lower jaw without notch in front. 
YELLOW-BELLIED Sea SNAKE. Pelamis bicolor. 
(Plate KIT, fig. 19.) 
Russell, Ind. Serp., I, p. 47, pl. 41. 
Hydrus bicolor, Schneid, Hist. Amph., p. 242. Cantor, Mal. Rept., p. 135. 
Pelamis bicolor, Dauwd., Rept., VII, p. 366. Gray, Viper. Snakes, p. 41. Fischer, 
Abhandl. Naturw. Hamb., 1856, p. 61. Giinther, Rept. Brit. India, p. 382. 
Hydrophis variegata, Schleg. Faun. Jap., tab. 8. 
pelamis, Schleg. Phys. Serp., II, p. 508, pl. 18, figs. 13—15. 
Pelamis ornata, Gray, Viper. Snakes, p. 48. 
Scales in 45 to 51 rows. 
Abdominals (or scales from mouth to vent longitudinally), 
378 to 440. 
Total length, 36 inches. 
Two or three postorbitals. Neck surrounded by from forty-five to 
fifty-one longitudinal series of scales. From 378 to 440 scales in a lateral 
longitudinal series, between the angle of the mouth and the vent. Colo- 
ration variable. 
