184 
INDIAN FRESH-WATER FISHES. 
frequently a dark mark at the base of the anterior 
dorsal rays, besides irregular spots on the fin (and a 
spot on the tail). 
Barbus hamiltonii, Day. 
Described first by Dr. Day in his Fish of Malabar. 
He seems since to have had reason to consider it only 
a variety of B. chola. The apparent distinctions are : 
scales 24 ; barbels short. No dark mark on the 
dorsal fin. 
Leuciscus presbyter, Cuv. 
A doubtful species, perhaps belonging to genus 
Barbus. 
Hab. Bombay. 
Char. Barbels none. Dorsal ray weak, not bony. 
Scales 26. Lateral line concave. 
Dorsal fin slightly edged with black. 
Oreinus progastus, McClelland. 
Hab. Upper Assam where it is called the u Adoee.” 
“ Foond chiefly in rivers, along the borders of 
Assam, where the stream is rapid enough to prevent 
any kind of navigation with boats or canoes. It 
attains 6 or 8 pounds in weight. It is not fit to eat, 
as it occasions swimming of the head and temporary 
loss of reason for several days. It is to be recognised 
by its lengthened and fleshy snout.” 
It is impossible to tell from the description alone 
whether this is a distinct species, or identical with 
either of those already described. 
