830 FISHES — CATOSTOMIDJE. 



Catosiomus eryihrurm, KafinesQUE Am. Month. Mag. and Grit. Rev., 1818, 345 ; loh. 



Oh., 1850, 59.— KiRTLAND, Rept. Zool. Ohio, 1838, 168. 

 Ptychostomua erythrurus, Cope, Proc. Am. Philos. Soo. Phila., 1870, 474 — Jordan, Fishes 



of lad., 1875, 221 (name only). 

 Teretultts erythrurus, Jordan and Copeland, Check List, 1&76, 157 (name only). 

 Butilus vielanurus, Rafinesqob, loh. Oh., 1820, 51. 



Description. — Body stourish, 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, truncate behind ; dor- 

 sal fin moderate, not falcate, its rays 12 to 19 — usually 13 in number ; scales large ; col- 

 oration olivaceous! sides pale or bilvery, with bright reflections; lower fins red or 

 orange in the adnlt ; head 4 to 5 ; depth 3i to 41 ; scales 6-45-5. Length 18 to 24 inches. 



Habitat, Great Lake Region to Georgia and Arizona. 



Diagnosis. — 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. duquesnii) 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. macrolepid-otum) 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 (\^lenciennes) Jordan. 

 Carp flullet; White L,ake mullet. 



Catosiomus carpio, Val., Hist. Nat. des Poiss., xvii, 1344, 457. — Stoker, Synopsis, 1846, 

 426 — GUNTHBK, Cat. Fishes Brit. Mns, vii, 1868, 20. 



Ptychostomus carpio, Cope, Proc. Am. Philos. Soc. Phila., 1670, 476. 



Moxoatomua carpio, Jordan, Man. Vert., 1876, 303. — Jordan and Gilbert, in Klippart's 

 Rept. Fish Comm. Obio, 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. Mas , 

 xii, 1878, 118. 

 Description. — Body deep, strongly compressed, the back somewhat elevated ; head 



large, broad above; mouth large, with fuUlipa, which are strongly plicate; lower lip 



full, 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 3| to 4J ; 



depth 3^ ; D. 17 ; scales 5-43-4. Length 18 to 24 inches. 

 Habitat, O hio River and Great Lake Region. 



