silukim;. 149 



2. Amblyceps mangois. 



Hab. Ganges and Jumna. 4 inches. 



Char. Anal rays 8. Barbels all longer than the 

 head, those of the maxillaries reaching to the end of 

 the pectoral fin. Dorsal spine smooth. No lateral 

 line. 



Colour olive brown. 



In the remaining species of Siluridse there is no 

 slit across under the throat ; in other worcjs, the skin 

 of the gill membranes is confluent with that of the 

 central portion of the throat itself. The gill open- 

 ings are thus distinctly separated the one from the 

 other. 



GENUS CALLOMYSTAX. 



Char. Barbels eight. Anterior and posterior 

 nostrils close together. Nasal barbels short, attached 

 to the flap covering the posterior nostril. Eyes 

 under the skin. 



1. Callomystax gagata. 



Hab. Bengal. 1 foot. 



"It is pretty common, but is full of small bones, 

 and of a very indifferent flavour." H. Buchanan, 



Char. Anal rays 15. Maxillary barbels partially 

 osseous, with a broad basal membrane. Dorsal spine 

 serrated in front, smooth behind. All the fins black, 

 with a whitish base, except the caudal which is white. 

 Young specimens with oblique blackish bands on the 

 back, also bands on the dorsal and caudal fins. 



