SILTJRIDiE. 
125 
1. Plotosus canius. 
Hat;. Bengal. Grows to between 4 and 5 feet. 
This fish is considered by the natives as excellent 
food. 
u It is a long fish, somewhat of the eel form, al- 
though not quite so flexible, and is of a lurid, uni- 
form, dark olive colour, with a tinge of violet.” 
Char. Bays of the two dorsal, the anal, and the 
caudal fins combined. 244 to 271. 
2. Plotosus limbatus. 
This is a doubtful species, said to differ from the 
last in the combined fin rays being only 224, and in 
the margin of the fins being black. 
GENUS CHACA. 
These are remarkably ugly fishes, having a wide 
frog mouth surrounded by numerous tentacles, and of a 
dirty brown or greenish colour. 
Char. The dorsal and anal fins are each divided 
into two portions, the posterior portion of each being 
united with the caudal. The anterior portion of the 
dorsal fin has a strong spine. Head exceedingly 
large and broad. Mouth very wide. Eyes rudimen- 
tary. 
1. Chaca lophioides. 
Hab. Bengal. 
Char. Fin rays. 1st dorsal 5 ; 2nd dorsal 25. 
Caudal 10. 2nd anal 12; 1st anal 10. 
u All over the skin are scattered little fleshy projec- 
tions, ragged on the surface.” 
