;Q22.] 



S. L. Hora : Central Asiatic Cobitidae. 



75 



mention of the lateral line in which, as explained above, the speci- 

 fic character is to be found. 



Quite a number of specimens have recently been brought 

 back from several places in the Kashmir Valley by the members of 

 the Zoological Survey of India. 



Nemachilus yasinensi Alcock. 



1898. Nemachilue yasinensis, Alcock, AV/>. Nat. Hist. Res. Pamir 

 Bound. Comm., p. 38, pi. ii, figs. 2, 2a. 



This species has hitherto been known from a single male speci- 

 men procured by Col. Alcock in the Yasin River. The specimen 

 is now preserved in our collection. A large number of specimens 

 have recently been obtained from a small stream flowing into the 

 vSind River, a tributary of the Jhelum River. Among these there 

 are three female specimens which differ considerably from the males. 

 The following are some of the chief points of difference : — 



Male. Female. 



The dorsal fin commences midway bet- 

 ween the tip of the snout and t lie base 

 of the caudal fin. 



The snout is slightly longci than the 

 postorbital part of the head. 



The lateral line is continued to the base 

 of the caudal fin. 



The caudal fin is forked. 



The dorsal fin commences somewhat 



nearer to the base of the caudal than 



to the tip of the snout. 

 The srtQjUt is shorter than the post- 



orbital part of head. 

 The lateral line ends in front of the 



base of the ventral fins. 

 The caudal fin is either rounded or 



truncate. 



Besides these the female specimens possess short paired fins, 

 small eyes and a deep caudal peduncle as compared with the males. 

 The males possess well-marked secondary sexual characters such 

 as are described towards the end of this paper. 



The eggs are small. 



The species is now known from the head -waters of the Indus 

 and Jhelum Rivers. 



Nemachilus lhasae Regan 

 (Text-figs, sa-c.) 



1905. Nemachilus lhasae, Regan, Ann. Mag. Nat. Hist. (7) XV, p, 301. 

 1908. Nemachilus stoliczkae, Lloyd (in part), Nee. Ind. Mus., II, p. 341. 

 1911. Nemachilus stoliczkae, Stewart (in part), Rec.lnd.Mus. VI, p. 70 

 1920. Nemachilus lhasae, Annandale and Hora (in part), Rec. Ind. 

 Mus. XVIII, p. [79. 



There are several young and half-grown specimens of this 

 species before me, which have been referred to Nemachilus stoliczkae 

 by Lloyd. They were collected by Capt. Kennedy and Capt. 

 Stewart in Rhamtso, Nyang-chu, Langma-thang-chu, Phari and 

 to the S.W. of Dochen, all in Eastern Tibet. My specimens agree 

 with Regan's description of the species. The young individuals, 

 however, possess black blotches along the lateral line besides short 

 cross-bars on the back. 



The species exhibits well-marked sexual dimorphism. 



