198 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY III. 



name bison on his authority. This species is not generally common ia 

 so far as my experience goes. I have, however, seen one or two from 

 the Ohio River. I found no specimens in the National Museum. 



47. CARPIODES THOMPSONI Afjassiz. 

 Lctke Carp. 



1842Catostomus cyprinus THOMPSON, Hist. Vt. 133. 



1855 Carpiodes thompsoni AGASSIZ, Am. Jouru. Sc. Arts, 2d series, xix, 191. 



Carpiodes thompsoni COPE, Proc. Ac. Nat. Sc. Phila. 285, 1864. 



Carpiodes tJiompsonii COPE, Proc. Am. Philos. Soc. Phila. 483, 1870. 



Carpiodes thompsoni JORDAN, Man. Vert. 297, 1876. 



Ichthyobus thompsoni NELSON, Bull. No. 1, Ills. Mus.Nat. Hist. 49, 1876. 



Carpiodes thompsoni JORDAN & COPELAND, Check List, 158, 1876. 



Carpiodes thompsonii JORDAN & GILBERT, in Klippart's Kept. 53, 1876. 



Carpiodes thompsoni JORDAN, Man. Vert. ed. 2d, 322, 1878. 



HABITAT. Great Lake region ; abundant. 



This species occurs in more or less abundance throughout the Great 

 Lake region. It is the shortest and most arched of all the species. Its 

 dorsal fin is about intermediate between that of velifer and that of 

 carpio. 1 have examined very many specimens of this species, and I 

 find little variation among them. This fish reaches a length of some- 

 thing over a foot, and is sold by the Lake fishermen as u Carp ". 



Specimens in United States National Museum. 



48. CARPIODES CYPRINUS (Le Sueur] Agassiz* 



Eastern Carp Suclcer. Nebraska Carp Sucl:er. Eio Grande Carp. 



1817Catostomus cyprinus LE SUEUR, Journ. Ac. Nat. Sc. Phila. i, 91. 



Labeo cyprinus DEKAY, New York Fauna, part iv, Fishes, 194, 1842. 

 Sclerognathus cyprinus CUVIER & VALENCIENNES, Hist. Nat. des Poissons, xvii, 



474, 1844. 



Sclerognathus cyprinus STORER, Synopsis, 427, 1846. 

 Carpiodes cyprinus AGASSIZ, Am. Journ. Sc. Arts, 2d series, xix, 191, 1855. 



