200 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY III. 



Middle States. I Lave no specimens referable to tljis species from the 

 Great Lakes, nor from the Mississippi or the Ohio. If cypriims, tumi- 

 dus, and damalis are identical, however, one of two things must be true. 

 Either C. cijprimis really inhabits the whole Mississippi Valley, but has 

 been overlooked or confounded with others, or else we have a very curi- 

 ous anomaly in the distribution of the species, it being an inhabitant 

 of waters of two widely separated areas, having little in common. The 

 former supposition seems the most probable, and I accordingly look for 

 specimens of C. cyprinus in the Mississii)pi Valley. 



Specimens in United States National Museum. 



Number. 



Locality. 



Collector. 



179 



13012 

 15891 

 20109 



Round Lake, Montgomery, Alabama 



Fort Pierre, Nebr. (types of C. damalis) 



Republican River 



Rio Grande, New Mexico (graiji) 



Nebraska 



"U. S. Mex. Boundary Survey" (types of iumidas 

 Brownsville, Tex 



Kumlieu & Bean. 

 Dr. Evans. 

 Wood & Hammond. 

 Dr. O. Loew. 



49. CAEPIODES CARPIO {Eajinesque) Jordan. 



Big Carp Sucker. Olive Carp Sucker. 



1320 — Catostomus carpio Rafinesque, Ich. Oh. 5G. 



Carpiodes carpio Jordan, Bull. Buffalo Soc. Nat. Hist. 95, 1876. 



Carpiodes carpio Jokdan, Man. Vert. 297, 1876. 



Ichthijohus carpio Nelson, Bull. No. 1, Ills. Mus. Nat. Hist. 49, 1876. 



Carpiodes carpio Joijdan & Copeland, Check Lis^, 158, 1876. 



Carpiodes carpio Jordan &. Gilbert, iu Klippart's Rept. 53, 1876. 



Carpiodes carpio Jordan, Proc. Ac. Nat. Sc. Phila. 72, 1877. 



Carpiodes carpio Jordan, Bull, U. S. Nat. Mus. ix, 34, 1877. 



Carpiodes carpio Jordan, Man. Vert. ed. 2d, 322, 1878. 

 1870 — Carpiodes nvmmifer CoPE, Proc. Am. Philos. Soc. Phila. 484. 



Habitat. — Mississippi Valley. Abundant iu the Ohio River. 



This is the most abundant species of its genus in the Ohio Kiver and 

 its tributaries. It is the largest species, the most elongate, and has the 

 lowest fiurays and the smallest head. The peculiar enlargement of the 

 anterior rays of the dorsal I have found to be an excellent diagnostic 

 character. This species has been well described by Prolessor Cope 

 under the name of 0. nummifer. There can, however, be but little 



