SEA SNAKES IN THE INDIAN MUSEUM. 



287 



9. Hydrophis mammillaris (Daud.). 



Hydrophis mammillaris, Blgr. Cat. Snakes Brit. Mas., Vol. Ill, p. 277. 

 Distira lapemidoides, Sc later, List Snakes Ind. Mus., 1891, p. 66, No. 13392. 





Habitat. 



- 

 Donor. 



Scales. 





Museum 

 No. 



■&> 



"T nj 



CO CU 



ill 



« ^s 



O <L) 



£ Xi 

 29? 



Midbody. 



Two head's-lengths 

 before vent. 



Ventrals. 



I339 2 



Bay of Bengal ... 



J. H. T. Walsh ... 



39 



38 



33* 



Rostra/. — (?) Prefrontals, — confluent with nasals. Frontal, — parietal sutures longest 

 but not twice prefrontals. Temporals, — two anterior, the upper large, succeeded by another 

 subequal shield in contact with the parietal. Marginals, — one, cuneate, between the 3rd 

 and 4th infralabials. Infralabials, — five. Suture between the first greater than that between 

 the anterior sublinguals, the 2nd excluded from contact with anterior sublinguals ; 5th 

 largest. Sublinguals, — two well-developed pairs both in contact. Costals, — imbricate 

 anteriorly, juxtaposed posteriorly. 



The specimen is a small and sodden one, and aberrant in that the prsefrontals and 

 nasals are completely confluent on each side. The anterior sublinguals touch the 1st, 3rd 

 and 4th infralabials on each side. The contact of the 4th with the anterior sublinguals is, 

 I believe, peculiar to this species ; if it is a normal character, which I doubt. 



10. Hydrophis melanocinxtus sp. nov. 





Donor. 



Scales. 





Museum ,, ... 

 v - Habitat. 



ISO. 



Two head's-lengths 

 behind head. 



Midbody. 



Two head's-lengths 

 before vent. 



Ventrals. 



1447O ; Puri 



J. L. Hendley 



1 

 1 



39 



39 



380 



