IIYDROPHIS. 401 



495, Hydrophis mamillaris. 



Russell, Ind. Serp. i, pi. xliv. 



Annuls mamillaris, Daud. Rept. vii, p. 340. 



Hydrophis fasciata (non Schn.), Gilnth. Rept. B. /. p. 374, pi. xxv, 



flg.Q. 



Head very small ; anterior part of body very slender, its diameter 

 about one third the depth of the posterior part. Hostral broader 

 than deep ; frontal longer than broad, as long as its distance from 

 the end of the snout, a little shorter than the parietals ; one prae- 

 aud two postoculars ; 7 upper labials, third and fourth entering 

 the eye ; two superposed anterior temporals ; two pairs of chin- 

 shields, in contact with each other. 25 to 27 scales round the 

 neck, 35 round the middle of the body ; scales rhomboidal and 

 imbricate on the neck, hexagonal and juxtaposed ou the body, with 

 a tubercle or short keel. Ventrals distinct throughout, 287-316. 

 Black, with yellowish annuli, which are interrupted on the belly. 



Total length 26 inches. 



Hab. I have examined two specimens : one from the Vizagapatam 

 coast, the other from Bombay. 



406. Hydrophis spiralis. 



Hydrus spiralis, Shmo, Zool. iii, p. 564, pi. cxxy. 

 Hydrophis melanurus, War/I. Icon. Amph. pi. iii. 

 Hydrophis spiralis, Gray, Cat. Sn. p. 54 ; Gilnth. Rept. B. 1. p. 300, 



pi. xxv, fig. D ; Anders. P. Z. 8. 1872, p. 397 ; Murray, Zool. Slncl, 



p. 390. 

 Hydrophis nigrocinctiiti, Jan, Icon. Ophid. 41, pi. ii, tig. 2. 



Head rather small ; body moderately elongate. Eostral broader 

 than deep ; frontal longer than broad, as long as its distance from 

 the rostral, a little shorter than the parietals ; one prse- and one 

 postocular ; a single anterior temporal, descending to the labial 

 border ; 6 or 7 upper labials, second largest, third and fourth 

 entering the eye ; two pairs of subequal chin-shields, in contact. 

 28 or 29 scales round the neck, 33 to 35 round the middle of the 

 body ; scales imbricate, smooth in the young, with a central 

 tubercle in the adult. Ventrals distinct, but feebly enlarged, 

 310-320. Olive above, yellowish beneath, with black rings con- 

 nected by a black ventral band in the young ; a more or less dis- 

 tinct series of round black dorsal spots between the rings ; head 

 black above, with a horseshoe-shaped yellow mark, the convexity 

 of which rests on the prsefrontal shields ; end of tail black. 



Total length 6 feet (Giinther). I have only seen young specimens. 



Hab. Indian Ocean ; Anderson received specimens from the 

 Cuttack coast, and Murray records the species from the Siud and 

 Cutch coasts. 



497. Hydrophis latifasciatus. 



Hydrophis latifasciata, Giinth. Rept. B. I. p. 372, pi. xxv, tig. T ; 

 Blanf. J. A. S. B. xlviii, 1879, pt. 2, p. 132. 



2D 



