340 Fishes of Upper Georgia. 



c. Head, mouth, and eye rather small, the latter 4£ 

 to 5£ in head ; no red ; black fin-markings dis- 

 tinct ; scales firm. 

 d. Mouth oblique; body considerably compressed; 

 depth more than one-fourth of length. Ohio 

 River, Potomac River, Great Lakes, teeth 

 serrate (Cyprinella), . . . analostanus. 

 dd. Mouth wider, nearly horizontal ; body elongate ; 

 less compressed ; depth less than one-fourth 

 of length. Ohio Valley and north-west, spilopterus. 

 >cc. Head, mouth, and eye large, the eye about 4 in 

 head ; fins sometimes with red ; black markings 

 obscure; an obscure black caudal spot; scales 

 rather loose ; size large ; appearance of Luxilus. 

 Chattahoochee River, . . . eurystomus. 



aa. A conspicuous black spot, much larger than eye, at 

 base of the caudal fin ; size large. 

 e. Fins in $, with much red; form stout; eye and 

 mouth large ; coloration dark ; nuptial tubercles 

 sparse, arranged in rows ; caudal spot smaller than 

 in the next, nearly round; lateral line about 39. 



Alabama River, callistius. 



ee. Fins without red ; form elongate ; eye and mouth mod- 

 erate ; coloration pale ; nuptial tubercles crowded ; 

 caudal spot more distinct than in any other Amer- 

 ican Cypriuoid, ovate; lat. 1. about 35. Alabama 

 River, . stigmaturus. 



LUXILUS. 



— Iiuxilus Rafinesqtje. Ich. Oh., 1820, 48. (Type L. chrysocephalus 

 Raf. = Cyp. cornutus Mitch.) 



= Hypsolepis Baird. Agassiz, Am. Jour. Sc. Arts, 1854, 359. (Type 

 Cyprinus cornutus Mitch.) 



= Plargyrus Girard. Proc. Phil. Ac. Sc, 1856, 195 (not of Rap.). 

 (Type Leuciscus plagyrus Kirt. — Cyp. cornutus Mit.) 



-cHypsilepis Cope. Cyp. Penn., 1866, and of authors. 



28. LUXILUS CORNUTUS. 



Cyprinus cornutus Mitehill, Am. Monthly Mag., 1817, 289, and 1818, 324. 



Leuciscus cornutus Storer, Bost. Jour. Nat. Hist., IV, 182, 1842. 



Dekay, Pishes N. Y., 1842, 207. Storer, Synopsis, 409, 1846. 



Giinther, Cat. Fishes, VII, 249, 1868. 

 Hypsolepis cornutus Storer, Fishes Mass., 1855, 284. Cope, Proc. 



Phil. Ac. Sci., 1864, 279. Putnam, Bulletin M. C. Z., 1863, 7. 

 Plargyrus cornutus Girard, Proc. Phil. Ac. Sci., 1856, 196. 



