SILURIDiE. 135 



2. Ailia affinis. 



Hab. Himalayan streams. 

 Char. Anal rays 60 to 61. 



Very similar to the first species, with which it seems 

 likely that it may be identical. 



GENUS AILIICHTHYS. 



Char. Similar to Ailia, but destitute of ventral 

 fins. 



1. Ailiichthys punctata. 



Hab. Punjab. 4 inches. 

 Char. Anal rays 76 to 82. 



Upper surface of the head nearly black. A large 

 black spot at the base of the caudal fin. 



GENUS PANGASIUS. 



Char. Adipose fin very short. Dorsal short, with a 

 spine. Barbels slender, four ; one pair maxillary, one 

 mandibular. 



1. Pangasius buchanani. 



This is a large fish, common in the large rivers and 

 estuaries, growing to 3 or four feet in length. It is 

 used for food, but is not considered of the best qua- 

 lity. 



Char. Anal rays 31 to 34. 



Head granulated above. Dorsal and pectoral spines 

 toothed on both edges. Barbels shorter than the 

 head. 



