122 NORTHERN ZOOLOGY. 



[58.] 2. Cyprinus (Leuciscus) chrysoleucas. (Mitchill?) New 



York Shiner. 



New York Shiner (Cyprinus chrysoleucas), Mitchill, New York Phil. Tr., p. 459 ? 



Mr. Todd, of Penetanguishene, sent me a short notice of a small fish which he 

 considered to be the same with the New York Shiner. It is caught in the month 

 of May, while spawning, on the shallows of Lake Huron, and is said to associate 

 with the Pomotis vulgaris *. It evidently belongs to the group of Leucisci which 

 have the dorsal far back, but the descriptions given by Dr. Mitchill and Mr. Todd 

 are not particular enough to enable us to infer, with any degree of certainty, that 

 these gentlemen had the same species before them. They do not agree in their 

 enumeration of the rays of the fins. 



DESCRIPTION 

 By Mr. Todd of the largest individual which he saw. 



" Head smooth, small, depressed on the upper aspect. Mouth small, even, toothless. 

 Eyes large : irides yellow. Body deep, its depth being an inch and three-quarters in a fish 

 six inches and a half long. Lateral line taking the curve of the belly. Dorsal fin far back. 

 Tail forked. Colour of the back dark, of the sides golden- yellow. 



" Fins.— Br. 3; P. 10; V. 9; D. 8; A. 12; C. 13. (Mr. Todd.) 



3; P. 17; V.9; D.9; A.U; C. 19." (Dr. Mitchill.) 



Under the appellation of Exoglossum nigrescens, or Black Chub, M. Rafi- 

 nesque describes a Cyprinoid fish which inhabits Lake Champlain. His account 

 of it is exceedingly brief, and his genus Exoglossum, founded chiefly on the 

 Cyprinus maxilingua of Le Sueur, is not adopted in the Regne Animal. 



" Head short, forehead smooth and convex ; lower lip trilobated. Body oblong, blackish ; 

 lateral line nearly straight. Pectoral fins short, obovate ; dorsal fin in the middle of the 

 back; tail slightly forked." ( Rafinesque, Journ. Ac. Sc. Phil., i., p. 417.) 



* Dr. Mitchill says that his C. chrysoleucas is found in the company of the Percajlavescem and Purrwtis vulgaris. 



