HYDKOPHIS. 401 



495. Hydrophis mamillaris. 



Russdl, Lid. Serp. i, pi. xliv. 

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



Hydrophis fasciata (nan Schn.}, Giinth. Rept. 11. I, p. 374, pi. xxv, 

 % Q- 



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

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

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

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

 and 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 on the body, with 

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

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



Total length 26 inches. 



Hob. I have examined two specimens : one from the Vizagapatarn 

 coast, the other from Bombay. 



496. Hydrophis spiralis. 



Ilydras spiralis, Shaiv, Zool. iii, p. 564, pi. cxxv. 

 Hydrophis melauurus, Wayl. Icon. Amph. pi. iii. 

 Hydrophis spiralis, Gray, Cat. Sn. p, 54; Giinth. Rept. B. I. p. 36(J, 



pi. xxv, fig. D ; Anders. P. Z. S. 1872, p. 397 ; Murray, Zool. Sind, 



p. 390. 

 Hydrophis nigrocinctus, Jan, Icon. Ophid. 41, pi. ii, fig. 2. 



Head rather small ; body moderately elongate. Kostral broader 

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

 the rostral, a little shorter than the parietals ; one prae- 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 praefrontal .shields ; end of tail black. 



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



Hob. Indian Ocean ; Anderson received specimens from the 

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

 Cutch coasts. 



497. Hydrophis latifasciatus. 



Hydrophis latifasciata, Giinth. Rept. B. 1. p. 372, pi. xxv, fig. T ; 

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



2D 



