406 COLTJBRIDjE. 



504. Enhydrina valakadien. 



Russell, Ind. Serp. ii, pi. xi. 



Hydras valakadyn, Boie, Isis, 1827, p. 554. 



Polyodontes annulatus, Lesson, in Belany. Voy. Ind. Or., Rept. p. 325, 



pi. iv. 

 Hydrophis schistosa (non DauiL), Schky. Phys. Serp. ii, p. 00, 



pi. xviii, figs. 1-3: Dmn. & Bibr. Erp. Gen. vii, p. 1344; Jan. 



Icon. Ophid. 41, pi. ii, fig. 1. 



Hydrophis bengalensis and H. subfasciata, Gray, Zool. Misc. p. 02. 

 Hydrus schistosus, Cantor, J. A. S. B. xvi, 1847, p. 1053. 

 Enhydrina bengalensis, Gray, Cat. Sn. p. 48 ; Giinth. Rept. B. I. 



p. 381 ; Fayrer, Thanatopli. pi. xviii ; Murray, Zool. Sind, p. 390. 

 Enhydrina valakadyen, Gray, Cat. Sn. p. 48; Stoliczka, J. A. S. B. 



xxxix, 1870, pt. 2, p. 213, and P. A. 8. B. 1872, p. 91. 

 Enhydrina schistosa, Stoliczka, J. A. S. B. xxxix, /. c. ; Anders 



P. Z. S. 1871, p. 193. 

 Hydrophis fasciatus, Jan, Icon. Ophid. 41, pi. iii, fig. 2. 



$. Enhydrina valakadien. 



Bostral deeper than broad; frontal small, longer than broad, 

 shorter than its distance from the end of the snout or than the 

 parietals ; one prse- and one or two postoculars ; 7 or 8 upper 

 labials, fourth or third and fourth entering the eye; usually 

 a single anterior temporal ; chin-shields small or indistinct. 40 

 to 60 scales round the neck, 50 to 70 round the middle of the 

 body ; scales feebly imbricate, with a small tubercle or short keel, 

 which is stronger in the males. Ventrals very slightly enlarged, 



