362 OPHIDIA. 



in number. Scales with a central tubercle. The first upper temporal 



shield much longer than high H. ornata, p. 376. 



Head rather thick and short ; body of moderate length. Two postoculars. 

 Ventral shields nearly twice as broad as the adjoining scales, 253-258 in 

 number. The first upper temporal shield is not much longer than high ; 

 thirty-five or thirty-seven series of scales round the neck H. elliotti, p. 377. 



Head and body of moderate width and length. Two postoculars ; nasal 

 shields longer than broad. Ventrals more than twice as broad as the 

 scales, 258 in number. The first upper temporal shield longer than high ; 

 twenty-eight series of scales round the neck H. pachycercus, p. 378. 



Head of moderate size and width ; body of moderate length. Two post- 

 oculars ; nasal shields as broad posteriorly as they are long ; anterior 

 ventral shields broad H. viperina, p. 378. 



Head rather short; body moderately stout. Two postoculars. Ventrals 

 distinct, but not twice as broad as the adjoining series. Back and sides 

 with large rounded spots, each with a lighter centre H. ocellata, p. 378. 



Head short and thick ; body rather stout ; shields of the snout irregular. 

 Two postoculars ; scales witli a strong white keel. Ventrals bicariuate, 

 not larger than the adjoining scales H. anomala, p. 379. 



Head short and thick; body stout. One postocular. Ventral shields 

 nearly twice as broad as the scales of the adjoining series H. curta, p. 379. 



Head short and tliick ; body stout. One postocular. No distinct ventral 

 shields. Trunk with from forty-one to forty-three blackish cross bands, 

 not extending downwards to the belly H. hardwickii, p. 380. 



Head short and thick ; body stout. One postocular. No distinct ventral 

 shields. Trunk encircled by from twenty-nine to thirty-four (thirty- 

 seven) black rings H. loreafa, p. 380. 



Hydrophis jeedonii. (Plate XXV. fig. B.) 



Hydrus nigrocinctus, var., Cantor, Mai. Rept. p. 129. pi. 40. fig. 8. 

 KerUia jerdonii, Gray, Viper. Snakes, p. 57. 



Head short, with the snout declivous and rather pointed ; body of moderate length. 

 Frontal shields small, not much larger than prseocular ; one postocular ; five upper labial 

 shields, the third and fourth of which enter the orbit, the last below the postocular ; two or 

 three large temporals on the side of each occipital, the anterior of which enters the labial 

 margin behind the fifth labial shield. Two pairs of chm-shields, in contact with one another. 

 Scales imbricate, large, higher than long, with the apex slightly truncated ; each scale with 

 a strong keel ; they are disposed in fifteen or seventeen series round the neck, and in nine- 

 teen or twenty-one in the middle of the body. Ventral shields distinct, but not twice as 

 large as the scales of the adjoining series, bituberculate, 235-238 in number. Anal shields 

 small ; terminal scale of the tail large. A series of seven simple teeth behind the grooved 

 fang in front. Trunk with from thirty-four to thirty-eight black cross bands, broadest on 

 the back and extendmg to the belly in young and half-grown speciinens. 



I have examined four examples, among which are the types of the descriptions of Gray and 



