48 EEPTILES. 



* The Jirst upper labial very long : eye rather large. 



1. The Bengal Enhydrina. Enliydrina 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. 



h. In spirits. Half grown. Madras. Presented by Thomas 

 Boileau, Esq. 



** The front upper labial triangular. 



2. The Valakadyen. Enhydrina Valakadyen. Hydrophis 

 subfasciata. Gray., Zool. Misc. 62. Valakadyen, Russell, Ind. Serp. 

 \. t. 11 (good). Hydius Valakadyn, Boie,Isis, 1827, 554. Hydro- 

 phis Schistosa, Schlegel, Phys. Serp. 500, t. 18, /. 1 — 3 (not Baud.) 

 Disteira Kusselii, Fttz. Isis, 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 veiy small shield at the upper 

 angle of the front of the eye. India. Presented by General 

 Hardwicke. 



c. In spirits. Adult. India, Madras. Presented by J. C. Jerdon, 



Esq. 



