CATOSTOMIDA. 35 
Ironton, John’s creek at Waterloo, Huron river at Milan, Ashta- 
bula creek at Ashtabula, Wabash river at Celina, Stillwater and 
Wolf creeks near Dayton, and North Fork of Licking river at 
Newark ; and in 1900 in the Cuyahoga river at Hawkins, Break- 
neck creek near Kent, Chippewa lake, Grand river at Painesville, 
Chagrin river at Willoughby, Wheeling creek at Bridgeport, Ohio 
river,and McMahon’s Run at Bellaire, and Licking reservoir. 
Catostomus nigricans Le Sueur. HoG SuCKER; STONE ROLLER. 
Head large, concave between the eyes, 44% in length. Body nearly 
terete, depth 4% to5. D.10 or 11; scales 48 to 55 in lateral line. Color, 
olive, becoming brownish on the back, which is crossed by several dark, 
irregular blotches; belly white. Length 2 feet. 
This Sucker is very widely distributed over the state, being 
found in all suitable localities. Its especial haunts are clear, 
stony ripples and rock-bottomed pools. Not taken in lakes. 
Kirtland records it as two species, /7ypentelium macropterum and 
Catostomus nigrans,; ‘extremely abundant in every running 
stream in Ohio,’’ Jordan (Ohio Rept.); Hamilton County, 
‘“everywhere abundant,’’ Henshall, 1888; Lorain County, 
McCormick, 1892; Kirsch, 1893, records it for the streams at 
nearly all points investigated in the Maumee River System, ‘‘ none 
taken in the lakes’’; Franklin County, Scioto river, Olentangy 
river, Scioto Big Run, Grant’s Run, Big Walnut creek, Rocky 
Fork, Black Lick, Alum creek, Big and Little Darby creeks and 
Hell Branch, Williamson and Osburn, 1897 ; every stream in the 
Big Jelloway Creek System, Parker, Williamson and Osburn, 
1898 ; Ohio river and Ice creek at Ironton, John’s creek at Water- 
loo, Huron river at Milan, Ashtabula creek at Ashtabula, Wabash 
river at Celina, Stillwater and Wolf creeks near Dayton and 
North Fork of Licking river at Newark, R. C. Osburn, 1899 ; 
Cuyahoga river at Hawkins, Grand river at Painesville, Chagrin 
river at Willoughby, Wheeling creek at Bridgeport, Ohio river 
and McMahon’s creek at Bellaire, and the outlet of Licking 
reservoir into Licking river, R. C. Osburn, 1900. 
