68 Catalogue of liej) files. 



HYDROPHIS, DaudiN; (sp.) 



H. Gracilis, Sliaw. 



a. adult. Saiidlieads. W. Earl, Esq. 



h. younger. Sandheads. 



c. very young. 



This siDecimen (b.) has 73 dark bands. On the neck these bands are 

 confluent and constitute the general color; the pale yellow lines being 

 broken up into oval spots on the sides. On the back the bands are 

 rhombiCj on a yellow ground. On the tail they are broad, with narrow 

 upright bars of the yellow ground color between them. 



H. Jerdonii, Gray. 



Hydrus Cantorii^ Jerdon^ Mus. lahel. 



Hydrus nigrocinctus^ Cantor. 



a. fine specimen. Mergui. W. Theobald, Esq., Jr. 



H. NiGRociNCTA, Daud. 



a. young. 



The black bands are more symmetrical than on the type, isolating 

 the jjale ground color into ellipsoid bands, which are wider than in the 

 type, covering eight scales in the middle or broadest part. On one 

 side of our specimen, there are two, on the othpr only one postocular. 



H. CURTA. Shaw. 

 a. small specimeij. 



This does not quite agree with the description, as there are four 

 cross bands, but the decided yellow temporal streak is a suilicicnt 

 character to recognize the species by. 



Ji. CYANOCINCTA, Daud. 

 Hydrus striatus, Cantor. 



a. adult. China. C. J. Bo wring, Esq. 



h. young. Hidgilli, H. L. Ilaughton, Esq. 



c. very young. 



a. has the tail very round and thick, as Giinthcr says is the case with 

 old males. 



The small specimen c, is remarkable for the narrowness of the bands 

 which are narrower than the pale interspaces, It exhibits also the trans- 

 verse frontal streak which becomes obsolete with age. 



II. ROBUSTA, Fischer, 



a. fine adult, Hidgilli. IT. L. Ilaughton, Esq. 



I think this must be a variety of H. rohusfa, thou^^h the scales 

 are small, and X can find no central tubercle, fcjcales on neck in 27 rows. 



