REPRINT OF ORIGINAL TEXT 115 



4th Subgenus. Teretulus. 



Body elongate cylindrical or somewhat quadrangu- 

 lar, nine abdominal rays, dorsal fins commonly small, 

 tail equally forked. 



An extensive Subgenus to which belong all the 

 following [II. 302 i.e., 304] species of Lesueur: C. 

 aureolus, C. macrolepidotus, C. longirostrum, C. nigri- 

 cans, C. vittatus, C. maculosus, C. Sucetta, besides the 

 C. teres and C. oblongus of Mitchell. 



60th Species. Black-face Sucker. Cotostomus 

 melanops. Catostome melanopse. 



Diameter one seventh of the length : head squared, 

 blackish above, snout convex obtuse; back oliva- 

 ceous, sides whitish with scattered black dots, a black 

 spot on the gill cover, and a [j-<?] large one between 

 the dorsal and caudal fins: lateral line straight, 

 dorsal fin with 14 rays, anal with 9 rays. 



A singular species seen at the falls. It is rare and 

 called Spotted Sucker or Black Sucker. Length 

 from four to six inches ; body cylindrical, flattened 

 beneath as far as the vent. Head flat above, black- 

 ish there and in the fore part. Mouth almost ter- 

 minal with thick whitish lips, the lower one shorter 

 and thicker, a few small black spots on the sides of 

 the head and a large one on the preopercule. Gill 

 cover silvery. Eyes black, iris brown with a gold 

 ring. Back of a rufescent colour with gold shades. 

 A very large black patch above the anal fin before 

 the tail. Sides pale with small unequal black dots, 

 belly whitish. Fins coppery, the pectoral elliptical 

 elongated with 18 rays, the anal elongated reaching 

 the tail, the dorsal broad and opposed to the abdom- 



