18 



SECOND YARKAND MISSION. 



If we examine the localities whence the fishes which form this collection were procured, 

 omitting the Murree and Kashmir examples, we find as follows : 



Thus, we have eight species from the head- waters of the Indus, two of which extend 

 to the great easterly, or Yarkand, River of Eastern Turkestan, and one to the Oxus of 

 Western Turkestan ; nine species from the Yarkand River, two common to the Indus and 

 three to the Oxus ; and four species from the Oxus, three of which are also found in the 

 Yarkand River, and one in the head waters of the Indus. 



If these species are examined in accordance with the districts traversed hy this Mission 

 and mapped out hy Mr. Hume, we ohtain the following results : 



(1st}. From the hilly region hetween Murree and the Zoji-la Pass, there exists one species 

 of Schizothorax showing an affinity to the Turkestan fauna : one Oreinus, a 

 Himalayan genus : and two species of Nemacheilus, a genus common to 

 Turkestan and Hindustan. 



(2nd). Prom Zoji-la to the head of the Pankong there are; one Siluroid, Exostoma, 

 evidently a Himalayan and hilly form. Of carps, the Himalayan Oreinus and 

 four genera which may be considered as common to Turkestan, and mostly to 

 the upper hilly regions, viz., Schizothorax, Schizopygopsis, Ptycobarbus and 

 Diptychus : lastly, a Nemacheilus, an almost universally distributed genus. 

 (3rd). Prom the plains of Yarkand, two species of Schizothorax and two of Ptyco- 

 barbus, evidently the most typical forms of the fishes in these elevated regions : 

 the genus Nemacheilus is likewise represented. 



