SEA SNAKES IN THE INDIAN MUSEUM. 



283 



5. Hydrophis gracilis (Shaw). 



Hydrophis gracilis, Blgr. Cat. Snakes Brit. Mus. Vol. Ill, p. 280. 



,, ,, Sclater, List Snakes Ind. Mus. 1891, p. 64, Nos. 8236, 8268, 



8468, 8543, 8544, 1 1484, 13276 









Scales. 







» 





bo 





en 



-4-> 



bo 





Museum 



Habitat. 



Donor. 



C 





C 



Ventrals. 



No. 







"7 a 

 Si 



-a 

 



wo head's- 

 before vent 











1% 



X) 

 13 











H 



i 



H 





8236 



Puri, Orissa 



Sir J. Fayrer 



'9 



32 



35 



244 



8268 



Hugli River 



H. L. Haughton 



19 



31 



32 



240 



8468 



Persian Gulf 



Blanford 



Bad Specimen 





8543 



Karachi 



Exchanged 



»j 







8544 



,, ... ... 



,1 ... ... 



'9 



29 



33 



257 



1 1484 



Mergui Expedition. 



J. Anderson 



21 



31 



3+ 



290 



13276 



Puri, Orissa 



A. Alcock 



19 



31 



33 



270 



Rostral, — portion seen from above greater than half the suture between the nasals. 

 Praefrontals touch the 2nd supralabial (except in No. 11484). Frontal, — parietal sutures 

 the longest, but not twice the praefrontals. Temporals, — one large followed by another 

 subequal shield, both in contact with the parietals. Marginals, — -none. Infralabiah, — 4. 

 The suture between the first greater than that between the anterior sublinguals; 4th 

 largest, and in contact with two scales behind. Sublinguals, — two well-developed pairs, 

 both in contact. Costals imbricate anteriorly, juxtaposed posteriorly. I have examined 

 15 examples. 



