190 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY III. 



Cycleptus elongatus JORDAN, Fishes of Ind. 222, 1875. 



Cycleptus elongatus JORDAN, Bull. Buffalo Soc. Nat. Hist. 95, 1876. (Name only.) 

 Cycleptus elongatus JORDAN, Man. Vert. 298, 1876. 

 Cycleptus elongatus NELSON, Bull. No. 1, Ills. Mus. Nat. Hist. 50, 1876. 

 Cycleptus elongatus JORDAN & COPELAND, Check List, 158, 1876. (Name only.) 

 Cycleptus elongatus JORDAN & GILBERT, in Klippart's Rept. 53, 1876. (Name only.) 

 Cycleptus elongatus JORDAN, Bull. U. S. Nat. Mus. ix, 38, 1877. 

 Cijcleplus elongatus JORDAN, Man. Vert. ed. 2d, 1878. 

 1818 Cycleptus nigresceus RAFINESQUE, Journal de Physique, 421. 

 Cycleptus nigrescens RAFINESQUE, Ich. Oh. 61, 1820. 



HABITAT. Mississippi Valley, in all the larger streams. 



This species is found in some abundance in tbe larger streams. At 

 the Falls of the Ohio, it is taken in nets, and meets a ready sale. It is, 

 however, much less abundant than the Buffalo fishes are. From the 

 general use of the name u Missouri Sucker", its abundance in the State 

 of Missouri may be inferred; but, as to the facts in the case, I am not 

 informed. This fish is as sharply distinguished from the other Suckers in 

 its appearance as in its anatomy. The dusky colors and the small size 

 of the head attract attention at once. 



But one species is yet known. That being the case, the synonymy of 

 the species needs no discussion, its oldest name being the one in com- 

 mon use. 



Specimens in United States National Museum. 



Genus CARPIODES Eafinesque. 



Carpiodcs RAFINESQUE, Ich. Oh. 56, 1820. (As snbgenus of Qatostomus.) 

 Sclerognatlms VALENCIENNES, Hist. Nat. des Poissons, xvii, 472, 1844. 



Type, Caiostomus cyprinus Le Sueur. 



Etymology, Latin carpio, a carp ; i. e., carp-like. 



Head comparatively short and deep, sometimes conic, sometimes 

 blunt, its length ranging from 3^ to 5 in that of the body, its upper 

 surface always rounded ; eye moderate, median or anterior in position 5 

 suborbital bones well developed, their depth more than half that of 



