258 CYPRINlDiE. 



mouth of moderate width, oblique, extending to helow the front 

 margin of the eye. Origin of the dorsal fin behind the root of the 

 ventrals, and conspicuously nearer to the root of the caudal than to 

 the end of the snout. Caudal fin forked. Pectorals terminating at 

 some distance from the ventrals. There are three longitudinal series 

 of scales between the lateral line and the root of the ventral fin. 

 Silvery ; dorsal and anal fins with a reddish tinge ; a black spot on 

 the base of the anterior dorsal rays. 



Virginia. 

 a-h. Three inches long. Roanocke Eiver. From Mr. Cope's Col- 

 lection. 



2. Pharyngeal teeth, in a single series (Moniana). 



77. Leuciscus gardoneus. 



Leuciscus gardoneus, Cttv. 8^ Val. xvii. p. 316. 



Cbondrostoma gardoneum,Co^j(',t7b?<r«. Ac. Nat. Sc. Philad. xiii, p. 395. 



D. 11. A. 10. L. lat. 39. L. transT. 7/?. 



The height of the body is one-fourth of the total length ; the 

 length of the head one-sixth of that of the body ; the diameter of 

 the eye two- sevenths of the length of the head. Origin of the 

 dorsal fin midway between the end of the snout and the root of the 

 caudal fin, which is but slightly forked. Three longitudinal series of 

 scales between the lateral line and ventral fin. Coloration uniform. 



Pharyngeal teeth hooked, with a slightly crenulated edge, 5 — 5. 

 ( Vol.) 



United States. 



Mr. Cope's assertion that this fish is a Chondrostoma requires 

 further confirmation. 



78. Leuciscus lutrensis. 



Leuciscus lutrensis, Baird 8f Girard, Proc. Ac. Nat. Sc. Philad. 1853, 

 p. 391 ; and in Marcy, Explor. Red River, p. 251, Zool. pi. 14. 

 figs. 9-12. 



Moniana lutrensis, Girard, Proc. Ac. Nat. I^c. Philad. 1856, p. 199 ; 

 U. S. ^ Pac. R. R. Exped. Fish. p. 272. 



D. 1/7. A. 1/9. V. 8. L. lat. 36. 



Twelve longitudinal series of scales on the greatest height of the 

 body. The length of the head equals the height of the body, and 

 is two-sevenths of the total (without caudal). The diameter of the 

 eye is one-fourth of the length of the head. Mouth oblique, with 

 the jaws even in front, and with the maxillary not extending to 

 below the front margin of the orbit. The ventral fins are in ad- 

 vance of the origin of the dorsal, which is midway between the end 

 of the snout and the base of the caudal. Pectorals not quite ex- 

 tending to the root of the ventrals. Caudal forked. Coloration 

 uniform. 



Phaiyngeal teeth 4 — 4. (Girard.) 



Red River ; Canadian River. 



