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INDIAN FRESH-WATER FISHES. 
GENUS PSEUDECHENEIS. 
Char. Barbels eight. Head covered with soft 
skin. Mouth small. An adhesive apparatus on 
the thorax, differing from that of Glyptosternum in 
having the plaits of skin transverse instead of longi- 
tudinal. Gill opening small. Pectoral and ventral 
fins placed horizontally. 
1. Pseudecheneis sulcatus. 
Hab. Mountain streams of N. E. Bengal. 5^ 
inches. 
Char. Anal rays 11. Outer rays of the pectoral 
and ventral fins broad and flexible, striated beneath. 
Dorsal spine flexible. 
Mottled with brown and yellow. 
GENUS EXOSTOMA. 
Char. Adipose fin long. Barbels 6 or 8. Lips 
formed into a broad flat sucker round the mouth. Gill 
openings very small. 
1. Exostoma labiatum. 
Hab. Mishmee Hills, Assam. 3|- inches. 
Char. Maxillary barbels extend to the base of the 
pectoral fin. 
2. Exostoma blythii. 
Hab. Sikkim Hill streams. 3 inches. 
Char. Maxillary barbels rudimentary. 
Colour yellowish brown. 
