1871.] F. Stoliczka — On Indian and Burmese Ophidians. 443 



The scales are in both the species referred to apparently smooth, 

 but under the lens a very fine striation, or rather sulcation, is per- 

 ceptible in both. The habits and general characters of both are also 

 exactly the same. 



I do not consider it, under these circumstances, necessary to 

 separate the present species generically from Lycodon. 



To the description of the species I may add, that each scale has 

 a very minute sub -apical impressed dot.* The occipitals are as 

 a rule obtusely angular posteriorly. The pree-ocular is sometimes 

 very small, or it reaches the top of head, and is in contact with 

 the anterior frontals. The 9th upper labial is longer than high. 

 One or two temporals are in contact with the post-oculars. 



Fam, HomalopsievE. 

 Hypsirhina enhydris (I. E., p. 281). 



Specimens, identical in coloration with those noted by Theobald 

 from Pegu (Linn. Soc. Zool., vol. x), also occur in Lower Bengal. 

 Giinther says: scales " constantly in 21 series." I have obtained 

 from the Sundarbunds, below Port Canning, one specimen, which 

 has 23 rows of scales ; but it does not differ in any other point of 

 structure or coloration from other typical specimens. The lateral 

 pale bands are generally in Bengal specimens distinct, but the 

 brown bands along the back are less so ; the central dark line 

 along the belly is often nearly continuous, except on the throat 

 where it is dissolved into spots. 



Fam. Crotalid^e. 

 Trimerestjrus Andersoni, Theob. 

 Trim. Andersoni and obscurus, Theobald, Cat. Kept. Asiat. Soc. Museum, 

 1868, pp. 75 and 76. 



In my paper on Malayan Eeptiles, &c. (Journ. Asiat. S. B., 

 vol. xxxix, p. 216), I stated that the two specimens described by 

 Theobald under different names belong to one species only. The 

 locality of those two specimens was unknown, though there could 

 have been little doubt, but that the snakes were Indian. I have 

 * I have not observed an ' apical groove.' 



