149 



been frequently met with in larii,'c numLers in the quiet pools 

 of mill dams. 

 Acad. Coll. S. I. 



3— H. diplaemia. 



Warty-Chub, or Red-Sides. 



The height of the hody is contained thrice and three- 

 fourths in the total length (without caudal), the length of 

 the head four times. Snout rounded, and wartj in the 

 males during the hreeding season. Color dusky above, the 

 sides and belly silvery, without band; below crimson in 

 spring. A large bhick spot at base of dorsal tin. Lengh, 2 

 to 4 inches. 



Fin-rays:— D. 1.9; P. 12; V. 8; A. 1.11; C— 18.— 

 Leuciscus diplemius, (Rafin.) Kirtland, Bost. Journ. Nat. 

 Hist. V, p. 21iJ, pi. 22, tig. 3; Guenth. Yll, p. 250. 



Hypsilepis, dij^lcvmia, Cope, Trans. Am. Phil. Soc. XlII, 

 p. 373. 



Inhabits the upper Potomac, in Washington county. 

 Acad. Coll. 



HYBOPSIS, Agassiz, 



1— H.hudsonius. 



Spawn-Eater. 



Head and body oblong, the dorsal outline somewhat arched 

 near the dorsal tin. The length of head somewhat more than 

 one-fifth, of the total (without caudal), the height of the body 

 one-fourth. Nose blunt; eyes large; scales very deciduous. 

 Yellow olive above dorsal line, with brown-edged scales; below 

 yellowish white. No distinct spot at base of dorsal fin. — 

 Length, 4 inches. 



Fin-rays:— D. 1. 8; P. 15; Y. 19; A. 1. 8; C. 19. 



Leiccisvus hudsonius, DeKay, Nat. Hist. New York, Fishes, 

 p. 206, pi. 34, fig. 109; Storer Synops. p. 157; Agassiz, Lake 

 Superior, p. 272; Guentlier, VII, p. 251. 



Hudsonius Jluviatilis, Girard, Proc. Ac. Nat. So. Philad. 

 1856, p. 210. 



— amarus, Girard, 1. c. 



Hijhopsis phaenna, Cope, Proc. Ac. Nat. Sc. Phil. 1864, 

 p. 279. 



— hudsonius, Cope, Trans. Am. Phil. Soc, XIII, p. 386, 

 pi. 12, fig. 3. 



