8 Journal of the F.M.S. Museums. [Vol. X, 



species in the Catalogue, and with Stejneger's description 

 of his type from Ishigaki Shima.* 



Wall has placed godeffroyi under ornatus, and in this 

 he may be right. The only reliable character separating 

 these two species appears to be the number of scales round 

 the neck and body, godeffroyi having fewer. On the other 

 hand, the only reliable character upon which I can separate 

 my lamberti from ornatus is also upon the number of scale 

 rows, lamberti having more. It is possible that ornatus 

 is a very variable species, but it is hardly likely that the 

 range would be so great in one locahty. I have never yet 

 seen any specimens of ornatus from the Gulf, although they 

 have been recorded, but until I can fdl in the large gap 

 which separates my specimens of lamberti from godeffroyi, 

 I leave all three as they stand. The accompanying table 

 will shew the ditferences between them. 



Variation. — The internasal suture is three times as 

 long as the interpraefrontal in one of my specimens, only 

 once and a half times as long in the other. Three postocu- 

 lars on one side, two on the other, in each example. Two 

 superposed anterior temporals, the lower one again broken 

 into two by a vertical suture. Seven supralabials in one*, 

 eight in the other, the third and fourth touching the eye. 

 Chin-shields subecpial, the posterior pair, and also partly 

 the anterior pair, separated by scales. Four infralabials in 

 contact with the chin-shields. 



Boulenger states that the scales on the posterior part 

 of the body are juxtaposed. I should term mine feebly 

 imbricate ; they arc certainly not juxtaposed as the word 

 is meant when applied to such species as H. gracilis or 

 Enhydris hardwickii. 



Colour. — Buffj^-white, with 58 and 68 darkish grey 

 dorsal bars upon the body and tail. Head greyish-olive 

 above, white below. 



Dentition.— Posterior maxillary, 12 or 13 ; palatine, 

 8 ; pterygoid, 25 to 27 ; mandibular, 20, (2 specimens 

 examined) . 



Hydrophis cyanocinctus Daudin. 



Hijdrophis cifanocinctus, Bouleng., Cat. Sn., B. M., Ill, p. 294 

 (1896)" ; idem. Fauna Malay Pen., Kept, and Batr., p. 185 (1912) ; 

 Wall, Journ. Bombay N. H. S., XXIII, p. 375 (1914), and XXVI, p. 

 433 (1919) ; N. de Rooij, Kept. Ind. Aust. Archipel., II, p. 237 (1917). 



Disteira cijanocincta, Stej. Herpet. .Japan, p. 428 (1907). 



Distira cuanocinta, Wall, (part.), Mem. Asiat. Soc, Bengal, II, 

 (8) p. 217 (1&09). 



40 specimens. Straits of Malacca, 11 ^ , 6 $ ; Gulf of 

 Siam, 6 s ,7 9 ; Cap St. Jacques, Cochin China, 6 $ ,4 9 . 



* I mention type because the tabulated list of the other three 

 specimens given is somewhat confusing. The type has 34 scales 

 round the neck and 43 round the body, an increase of 9. But the 

 next two examples have an increase of only 5 and 1 respectively, 

 while the last has none at all, the count for this individual being 

 33 for both neck and body. It looks like a misprint, but I have 

 no means of knowing. 



