SNAKES. 54 
eyes, broad oblong bands across the back of the neck, and upper 
part of the front of the body, yellow: scales with a narrow keel, oc- 
cupying about half the length of the dorsal and asmall central part 
of the ventral scales; of the neck nearly smooth. 
a, 6. In spirits. Adult and half grown. India, Bengal. Presented 
by General Hardwicke. 
Hydrophis Hardwickii, Gray, MSS. Brit. Mus. 1836. 
c. In spirits. Young. Indian Ocean. From Mr. Russell’s collec- 
tion ; named by Dr. Shaw. 
Hydrus fasciatus, Shaw, Zool. iii. 563. Schneid. Amph. 240. 
Liopola fasciata, Gray, Zool. Misc. 60. 
4, The Kerrit. Hydrophis nigrocincta, Daud. Rept. vii. 580. 
Gray, Ann. Phil. x. 207. Schlegel, Phys. Serp. 505, t. 18, f. 5—7, 
(89, 10?) Hydrus (Enhydris) nigrocinctus, Merrem, Tent. 140. 
Anguis Xiphura, Herm. Obs. Zool. 1288. Kerril Pattee, Russell, 
Ind. Serp. ii. t.6. Leioselasma nigrocincta, Fitz. Isis, 1827, 738. 
Head rather small: above greenish in spirits, dusky ; beneath 
yellow, with close, rather narrow, dark brown rings: head yellow ; 
front of upper lip, crown, and band from the angle of the mouth 
across the nape, brown: rostral plates broad and low: one anterior, 
two posterior oculars : lower rostral plates triangular: the four front 
lower lip plates large, the hinder pair much the largest, rest small: 
chin shields two pairs: tail regularly and equally brown, and 
yellow-banded: temple shielded, the central shield larger than 
the others: scales with a very narrow, slight, elongate keel; of the 
lower part of the body with a stronger keel, forming a ridge oc- 
cupying about half the length of the central line of the scales. 
a. Inspirits. Bengal. Presented by General Hardwicke. 
+++ Scales rather elongate, largely keeled. 
5. The Biack-HEADED Kerreit. Hydrophis doliata, Gray, 
Zool. Mise. 6.  Disteria doliata, Lacep. Ann. Mus. iv. 199, t. 10, 
t. 57, f.2? Gray, Ann. Phil. x. 1825, 207. Fitz. Cat. Gray, 
App. King’s Voy. ? Enhydris doliatus, Merrem, Tent. 140. 
Grayish white, back with darker bands ; head, throat and streak 
on the front of belly black: scales with an elongated, regular, nar- 
row keel, ending in a tubercle at the end, the keel and subterminal 
tubercles being more distinct on the lower and hinder part of the 
body ; of tail broad and smooth: lower lip with a marginal series of 
triangular scales: the second and third upper labial shields nearly 
equal: one large anterior and two small posterior oculars. 
F2 
