CYPRINID^. 43 



Genus: Campostoma. 



Campostoma anomalum (Rafinesque). Stone-ROLLER ; 

 Stee^-backed Chub ; Mammy ; Dough-be^iat. 



This species is most easily distinguished by an examination of the intes- 

 tine, which is very long and is wound in many convolutions about the air- 

 bladder. This arrangenient is peculiar to this genus among all known fishes. 

 Head 4; depth 4* ; eye 5 to 5% in head; D. 8; A. 7; scales 7-48-6; teeth 4-4. 

 Body stoutish. Snout somewhat decurved, mouth inferior. Color brownish, 

 almost black in adult breeding males; sides brassy, irregularly mottled with 

 dark olivaceous or brown; fins usually plain, in breeding males the dorsal is 

 tinged with orange, a black bar through its middle, other fins more or less 

 tinged with orange. Entire dorsum of breeding males covered with tuber- 

 cles. Young with a dark lateral band extending onto gill covers and between 

 eye and tip of snout. Length 6 to 8 inches. 



A very abundant and widel} r distributed species, generally 

 most abundant in small streams and on ripples of larger ones. 

 First recorded for the state by Kirtland under the name Exoglos- 

 suni lesueurianum ; given by Jordan as " extremely abundant in 

 every stream in the state ' ' ; Hamilton County, ' ' abundant in 

 every stream explored," Henshall, 1888 ; Lorain County, " com- 

 mon in most of our streams," McCormick, 1892 ; Franklin 

 County, " very abundant everywhere," Williamson and Osburn, 

 1897 5 Big Jelloway creek system, " apparently the most abund- 

 ant species," Parker, Williamson and Osburn, 1898 ; recorded 

 for many places in the Mauniee river system (not taken in St. 

 Mary's river) by Kirsch, 1893 > Ohio river and Ice creek at 

 Ironton, Huron river at Milan, Ashtabula creek at Ashtabula, 

 Wabash river at Celina, Stillwater and Wolf creeks near Dayton, 

 north fork of Licking river at Newark, R. C. Osburn, 1899 ; 

 Niggermill Run at Salem, E. B. Williamson, 1900 ; Cuyahoga 

 river at Kent and Hawkins, Breakneck creek at Kent, Chippewa 

 lake, Summit lake, Grand river at Painesville, Chagrin river at 

 Willoughby, Wheeling creek at Bridgeport, Ohio river and 

 McMahon creek at Bellaire, Licking reservoir, R. C. Osburn, 

 1900. 



