830 FISHES—CATOSTOMIDZ. 
Catostomus erythrurus, RAFINESQUE Am. Month. Mag. and Crit. Rev., 1818, 345; Ich. 
Oh., 1850, 59.—KIRTLAND, Rept. Zool. Ohio, 1838, 168. 
Ptychostomus erythrurus, COPE, Proc. Am. Philos. Soc. Phila., 1870, 474 —JoRDAN, Fishes 
of Ind., 1875, 221 (name only). 
Teretulus erythrurus, JORDAN and CoreLann, Check List, 1676, 157 (name only). 
Rutilus melanurus, RAFINESQUE, Ich. Oh., 1820, 51. 
Description.— Body stoutish, compressed, varying to moderately elongate; head stout, 
moderately long; mouth moderate or rather large, not very small, nor very much over- 
passed by the muzzle; lips thick, strongly plicate; lower lip full, truneate behind; dor- 
sal fin moderate, not falcate, its rays 12 to 19—usually 13 in number; scales large; col- 
oration olivaceous; sides pale or silvery, with bright reflections; lower fins red or 
orange in the adult; head 4 to 5; depth 34 to 44; scales 6-45-5. Length 18 to 24 inches. 
Habitat, Great Lake Region to Georgia and Arizona. 
Diagnesis.—This species may be known by presence of a rather large 
mouth, and a moderate dorsal fin. 
Habits.—Two varieties of the Common Red Horse may be recognized in 
Ohio. One (var. duquesnz) is the common form in the streams of the 
southern two-thirds of the State. This form is more silvery in color; 
the body and head are more elongate, and the mouth is larger; the 
other (var. macrolepidotum) is common in Lake Erie, and in all these 
respects forms a transition towards the short headed, small-mouthed 
and high-backed Myxostoma aureolum. Both varieties reach a large size, 
and are used as food, although their value is not great. The species is 
found in all clear waters in the west, and ascends the small streams in 
May, for the purpose of spawning. It is not very tenacious of life, and 
in the aquarium dies on the least suspicion of impure water. 
47. Myxostoma cARPIo (Valenciennes) Jordan. 
Carp Wulliet; White Lake Mullet. 
Catostomus carpio, VAL., Hist. Nat. des Poiss., xvii, 1344, 457.—STORER, Synopsis, 1846, 
426.—GUNTHER, Cat. Fishes Brit. Mus, vii, 1868, 20. 
Ptychostomus carpio, Cork, Proc. Am. Philos. Soc. Phila., 1870, 476. 
Moxostomus carpio, JORDAN, Man. Vert., 1876, 303.—JORDAN and GILBERT, in Klippart’s 
Rept. Fish Comm. Ohio, 1877, 53 (name only). 
Teretulus carpio, NELSON, Bull, No. 1, Ills. Mus. Nat. Hist., 1876, 49.—JorDAN and CoPE- 
LAND, Check List, 1876, 157 (name only). 
Myxostoma carpio, JORDAN, Man. Vert. E. U.S., 2d Ed., 1878, 312; Bull. U. S. Nat. Mus, 
xii, 1878, 118. 
Description.—Body deep, strongly compressed, the back somewhat elevated ; head 
large, broad above; mouth large, with full lips, which are strongly plicate; lower lip 
fall, truncate behind; eye large; dorsal fin high and large, more developed than in any 
other species of this genus, the first ray about as long as the base of the fin, the rays 15 
to 18 in number; coloration very pale and silvery, the lower fins pale; head 33 to 44; 
depth 34; D. 17; scales 5-43-4. Length 18 to 24 inches. 
Habitat, Ohio River and Great Lake Region. 
