CATOSTOMIDvE. 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 RoixER. 



Head large, concave between the eyes, 4^ in length. Body nearly 

 terete, depth 4^ to 5. 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, Hypentelium 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. 



