132 Records of the Indian Mwieum. [Vol. XVI, 



in this species the abdomen is naturally convex (it is apt to 

 collapse in preserved specimens) and the pectoral fins are set on 

 the sides of the body a short distance above the ventral surface and 

 somewhat obliquely. These fins, though sometimes as long as 

 the head, are usually a little shorter; the distance between their 

 tips and the base of the ventrals is about ^ their own length ; they 

 are not greatly expanded and only the outermost ray is simple and 

 flattened. The eye is variable in size even in specimens from 

 precisely the same locality, but its length is usually contained at 

 least very nearly 5 times in the length of the head : its upper 

 border is situated considerably below the upper profile of the 

 head. The upper profile of the body is arched. A broad but 

 shallow depression runs across the snout of the adult male a little 

 in front of the eyes and the region immediately in front of and 

 behind it is covered with prominent tubercles. 



D. lamta is common in the river at Medha, where it is 

 captured in considerable numbers for food by fishermen using 

 cast-nets. Specimens are very similar to those recently obtained 

 in the Shan States [op. cit., 19 18), but perhaps a little darker in 

 colour. The largest collected is 152 mm. long. The sides and 

 back of the head and body are dark olivaceous green. Traces of a 

 darker mid-lateral stripe extending on to the caudal fin can be 

 detected, and of a small dark spot just behind the upper angle of 

 the opercle. The free border of the opercle is paler and the 

 ventral surface yellowish. The fins are pale olivaceous. 



Discognathus jcrdoni, Day. 



1889. Discognathus jerdoni, Day, op. cit., p. 247. 



This species is distinguished from the former by the following 

 characters : — 



{a) The head is relatively smaller. 



{b) The eye is as a rule larger in proportion to the head, 

 (c) The pectoral fin is much shorter than the head and its 

 tip is further removed from the root of the ventral 

 fin. 

 id) The body is less elevated, the dorsal and ventral profiles 

 being nearly parallel in the adult male. 

 I can detect no real difference in the scales and fin-rays. 



Discognathus nasutus (McClelland). 

 (Plate II, figs. 2. 2a). 



1839. Phitvcai'a iiasuta, McClelland, As. J^es. IX(2) (^lnd. Cypy.), p. 300, 



pi. Ivii, fig. 2. 

 1871. Mnyoa modesta, Day, Journ. As. Soc. Bengal (2)XL, p. 108, pi. ix, 



fig. 2. 

 1889. Discognathus niodestns, Day, op. cit., p. 247. 

 iSgo. DiscognatliHs lamta, V inciguerra, ylnn. Mits. St. Nat. Genova (2)IX, 



p. 270, fitj;-. 



