48 REPTILES. 
* The first upper labial very long : eye rather large. 
1. The BENGAL Ennyprina. Enhydrina bengalensis. Hy- 
drophis bengalensis, Gray, Zool. Misc. 62. 
Head rather small: one anterior and two posterior ocular 
shields: the front upper lip shield very long, strap-like, extending 
the whole length of the outer side of the nasal plate: reddish, be- 
neath white in spirits: back with narrow cross-bands: scales with 
a short central raised keel, extending rather more than half the length 
of the scales of the middle of the body: of the under-side rather 
larger, with a short central tubercle in the place of the keel: ventral 
shield rather irregular, like ventral scales, but generally two-keeled ; 
shields on side of chin, under the lower labial shields, larger, two or 
three pairs. 
a. In spirits. Adult male. The front upper labial on one side di- 
vided into two plates. Bengal. Presented by General Hard- 
wicke. 
b. In spirits. Half grown. Madras. Presented by Thomas 
Boileau, Esq. 
** The front upper labial triangular. 
2. The VataKkapDyEN. Enhydrina Valakadyen. Hydrophis 
subfasciata, Gray, Zool. Mise. 62. Valakadyen, Russell, Ind. Serp. 
i. f. 11 (good). Hydrus Valakadyn, Bove, Isis, 1827, 554. Hydro- 
phis Schistosa, Schlegel, Phys. Serp. 500, t. 18, f. 1—3 (not Daud.) 
Disteira Russelii, Fitz. Is2s, 1827, 733. 
Head rather large: gray, back with narrow dark cross-bands ; 
beneath white: one anterior and one posterior ocular shield: the 
front upper labial shield moderate, subtrigonal, reaching half-way 
up the outer edge of the nasal plates ; the front lower labial plates 
with small scales like shields beneath them: scales with a short 
central raised keel, of middle of under-side rather larger: ventral 
shields with two keels. 
a. In spirits. Adult. Partly bleached. India, Bengal. Presented 
by Dr. P. Russell. 
b. In spirits. Smaller. The frontal shield on side is bent down, 
occupying the place of (perhaps united to) the anterior ocular 
shield, but on one side there is a very small shield at the upper 
angle of the front of the eye. India. Presented by General 
Hardwicke. 
ec. In spirits. Adult. India, Madras. Presented by J. C. Jerdon, 
Esq. 
