209. DisTiEA. 299 



relatively large anteriorly, bitubcrculate in the male, 235-267. 

 Slaty grey above, with rbomboidal transverse black spots, white or 

 pink on the sides and inferiorly; some specimens uniform dark 

 grey above ; in the young the black spots are continued down the 

 sides of the body ; end of tail black. 



Total length 920 mUUm. ; tail 100. 



From the Persian Gulf and the Mekran Coast, round the coasts of 

 India and Burma to Java, Hong Kong, and Hainan. 



a. 5 (V. 260). Muscat. A. S. G. Jayakar, Esq. [P.]. 



(Type of H. jaydkari.) 



b. $ (V. 248). Bombay. H. M. Phipson, Esq. [P.]. 



c. Hgr. (V. 245). Malabar. Col. Beddome fO.]. 



d. Yg. (V. 237). Madras. T. 0. Jerdon, Esq. [P.]. 



e. S (V. 245). Hong Kong. City Hall Museum [E.J. 

 /. ? (V. 235). Indian Ocean. 



18. Distira jerdonii. 



Russell, Ind. Serp. ii. pi. xii. (1801). 



Hydras nigrocinctus, var., Canto?; Cat. Mai. Sept. p. 129, pi. xl. 



fig. 8 (1847). 

 Kerilia jerdonii, Grray, Cat. p. 57 (1849). 



Hydrus cantori, Jerdon, Journ. As. Soc. Beng. xxii. 1854, p. 626. 

 Hydrophis jerdonii, Giinth. Sept. Brit. Ind. p. 362, pi. xxv. fig. B 



(1864) ; Anders. Proc. Zool. Soc. 1871, p. 190; Fayrer, Thanatoph. 



Ind. pi. XX. (1874). 

 TASiim-^&odiomi, Bouleng. Faun. Ind., Sept. p. 408 (1890); Boettg. 



Mitth. Geogr. Ges. u. Nat. Mus. Bremen, (2) v. 1893, p. — . 



Head short ; snout declivous and rather pointed ; body mode- 

 rately elongate. Rostral as deep as broad ; nasals shorter than 

 the frontal, more than twice as long as the suture between the 

 praefrontals ; frontal longer than broad, nearly as long as its 

 distance from the end of the snout, shorter than the parietals ; one 

 prae- and one postocular ; five upper labials, third and fourth 

 entering the eye ; a single large anterior temporal, descending to 

 the labial margin. 15 or 17 scales round the neck, 19 or 21 round 

 the body; scales broader than long, slightly imbricate, strongly 

 keeled. Ventrals distinct, but feebly enlarged, more or less- 

 distinctly bituberculate, 224-238. Olive above, yellowish beneath, 

 with black cross-bands, which form complete rings in young and 

 half-grown specimens ; a black spot may be present between each 

 pair of annuli. 



Total length 910 millim. ; tail 100. 



Bay of Bengal, Straits of Malacca, Borneo. 



a. (J (V. 238). Madras. T. C. Jerdon, Esq. [P.]. 



(Type.) 



b. 3 (V. 228). Madras. F. Day, Esq. [?•]• 



c. Hgr„ dry. Pinang. Dr. Cantor. 



d. § (V. 224). P Haslar Collection. 



