50 
Zoological Miscellany, 
Schn. Russ. Ind. Serp. t. 41. Above black ; sides and belly yellow; tail 
yellow, black varied. 
Inhabits India. Brit. Mus. 
2. Pelamis ornata, Gray. Hydrus hicolor, var. Schlegel, Fauna Japon. 
t. White, with black dorsal and ventral alternating half rings : head 
white, black varied. 
Inhabits India. Brit. Mus. 
II. Lapemis, Gray. Head moderate, rather compressed; gape moderate. 
* Scales smooth. 
1. Lapemis curtus, Gray. Hydrus curtus, Shaw. Pelamis curtus, Gray. 
Yellow ; back with broad tapering dark olive cross bands. 
Inhabits India. Brit. Mus. 
** Dorsal and lateral scales smooth, ventral keeled. 
2. Lapemis Hardivickii. Back olive, yellow cross-banded ; belly yellow ' 
scales very large : body rather short, thick : head moderate. 
Inhabits Ind^ia. Brit. Mus. 
b. Body covered ivith keeled scales : those of the front part of the body lan~ 
ceolate, of the hinder part 6-sided. Head smaller than body. (Hydrina). 
III. Hydros. The ventral shields separate, half ovate, forming a keeled 
ridge : scales, front ones lanceolate, imbricate, with an acute keel : head 
large : hinder ocular shields 3. 
1. Hydrus major, Shaw, Zool. iii. 1. 124. Pelamis Shawii, Merrem, 139. 
Pale brown (bleached ?) ; where the epidermis is off the scales are white. 
Inhabits India. Brit. Mus, 
IV. Liopala, Gray. The ventral shields large, front ones smooth, uni- 
ted, hinder ones separate, tubercular: front dorsal scales smooth, hinder 
ones marked with a central tubercle : 1 or 2 hinder ocular shields : head 
small. 
* One posterior ocular shield. Ventral shields much the largest. 
1. Liopola gracilis. Gray. Hydrus gracilis, Shaw, Zool. iii. Pale brown 
in spirits, beneath paler : neck with narrow rather distant cross rings, (re- 
mainder of body bleached) : the dorsal scales of the middle of the body 
smallest, gradually increasing in size and in the strength of the keel as they 
approach the ventral series. 
Inhabits Indian seas. Brit. Mus. 
Two post-ocular shields. Ventral shields rather the largest, some of the 
hinder ventral shields sometimes united. 
2. Liopola fasciata. Gray. Blackish in spirits ; belly and lower part of 
the sides of the hinder part of the body yellow, with narrow yellow bands, 
which gradually become wider as they approach the hinder part of the bo- 
dy ; front half of the tail with narrow cross bands : scales moderate, ante- 
rior ones small, hinder with a slight subtubercular central keel ; those of 
the lower part of the sides largest : temporal shields 2, very large. 
Inhabits Indian seas. Brit. Mus. 
