CATOSTOMID&. 37 
Not usually a common species, though widely distributed. 
Recorded by Kirtland, 1838; Hamilton County, Little Miami 
and tributaries, Henshall, 1888; Lorain County, ‘‘ Rare, Ver- 
million river and Beaver creek,’’ McCormick, 1892; Maumee 
river at Grand Rapids, St. Joseph river at Edgerton, Fish creek 
at Edgerton, St. Mary’s river at St. Mary’s and Rockford, 
Auglaize river at Wapakoneta and Cloverdale, Blanchard river at 
Findlay, Kirsch, 1893 ; Franklin County, Scioto river, Olentangy 
river, Black Lick, Little Walnut and Big Darby, Williamson and 
Osburn, 1897 ; Stillwater creek near Dayton, and Wabash river 
near Celina, R. C. Osburn, 1899. At the latter place, in a series 
of pools formed by the outlet of St. Mary’s reservoir, the species 
was taken in abundance, the only time I have ever taken more 
than a few individuals in one locality. 
Genus:  MOXOSTOMA. 
Key to Spectes. 
A. Dorsal fin of 15 to 18 rays; lower lip V-shaped.— AnNISuUYUM. 
AA. Dorsal fin of less than 15 rays; lower lip truncate behind, not evidently V-shaped. 
B. Head rather large, 4 to nearly 5in length, snout little projecting.—aureolum. 
BB. Head small and conic, about 5% in length, the snout much projecting beyond 
the small mouth.— breviceps. 
Moxostoma anisurum (Rafinesque). WHITE-NOSED SUCKER. 
Head short and broad, flattened above, 374 to 44% in length, eye midway 
in head, 4 to 5 in its length. Body compressed; back high, considerably 
more arched than in JZ, aureolum,; depth 3% in length. Fins all large. 
Color bright olivaceous to smoky above, white or silvery on sides and belly. 
Most easily distinguished from other species of the genus occurring in Ohio, 
by the long dorsal fin, containing from 15 to 18 rays. 
This species is found in both the Lake and Ohio river drain- 
age, but is not usually very common, and is confined to the larger 
streams. Ohio river, ‘‘as far as Pittsburg,’’ Rafinesque. Given 
by Jordan (Ohio Rept.) as three species—J/. anisurum, of which 
he says, ‘‘I have seen a few specimens, obtained in the Cincin- 
nati market’’; JZ. velatum, ‘‘ frequently taken in the Ohio river 
and its tributaries,’ and JZ, carpio, from Lake Erie and the Ohio 
at Cincinnati and Marietta. These three are now regarded as 
synonymous (See Bull. 47, U. S. Natl. Mus.). Hamilton County, 
