DEFORMED CARP SUCKER. 813 



Description. — Body short and deep, the back arched, head thick, the mnzzle notably 

 blant bat less so than in G. difformia ; anterior edge of mandible in advance of the 

 orbit ; the maxillary j ast reaching the line of the lower rim of the orbit ; eye smallish, 

 i\ in head ; anterior rays of dorsal longer than the base of the fin inserted about mid- 

 way between snout and base of caudal; head 4; depth 2J ; D., 26; scales 7-37-5. 

 Length, one foot. 



Habitat, Mississippi Valley, generally abundant. 



Diagnosis. — This is one of the species with a very blunt head and very 

 high dorsal fin. The head is normal in appearance, not distorted as in 

 C. difformis. 



Habits. — This species is abundant in the Ohio, and is not usually dis- 

 tinguished by the fishermen from 0. velifer. 



The name, cutisanserinus (goose-skinned), alludes to the presence of 

 minute tubercles on the snout of the male in the spawning season. 



36. Carpiodes difformis Cope. 



Deformed Carp Sucker. 



Carpiodes difformia, Cope, Proc. Am. Philos. Soo, Phila., 1870, 480. — Jordan, Man. Vert., 

 1876, 297 ; 2d Ed., 1878, 321 ; Proc. Acad. Nat, Sci. Phila., 1877, 72 ; Ball. U. S. Nat. 

 Mas., 9, 1877, ."iO ; xii, 1878, 195.— Jordan and Copeland, Check List, 1876, 158. — 

 Jordan and Gilbert, in Klippart's First Report Ohio Fish Commission, 86, pi, xiii, 

 f, 21, 1877. 

 Description. — Body short and deep, the back considerably arched ; head very thick, 

 the mazzle exceedingly blunt, almost truncate, so that the anterior edge of the mandi- 

 ble is in line with the anterior rim of the orbit, and the maxillary reaches to the an- 

 terior edge of the pupil ; anterior suborbital bone deeper than long ; eye large, 3^ to 4 

 in head ; dorsal fia with its anterior rays very long, longer than the base of the fin; the 

 first ray of the dorsal nearer the muzzle than the base of the caudal; head ii ; depth 

 2i; D., 24; scales 6-31-4. Length, one foot. 



Habitat, Ohio Valley. 



Diagnosis. — This species resembles a monstrosity of the preceding, 

 which indeed it may really be. 



Habits. — But two or three specimens of this species are now known, all 

 from the Wabash and lower Ohio. 



Gkncs 18. CYCLEPTUS. Rafinesqae. 



Cycleptaa, Rafinksqub, Journal de Physique, de Chimie et d'Histoire Naturelle, Paris, 



1819, 421. 

 Bhytidostomus, Hkckbl, Fische Syriena, Busseggers Beisen, 1842, p. 1023. 

 Catoatomua et Sclerognathus, sp., AtJCT. 



Type, Gycleptus nigreacens, Rafinesqae, = Catoatomua elongatua, LeSueur. 



Etymology, huhloa, round; lepioa, small. "The name means small, lonnd mouth." 

 {Bafinesque.) 



