SILURID2E. 
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 Siluridas there is no 
slit across under the throat ; in other words, 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.” II. 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. 
