1GG CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 



spot; a dark spot near the base of the dorsal in front, as iu Hylorliyn- 

 cJniti. Head P, : depth ~>. D. 8; A. 7; scales 7-44-4; teeth 4-4, little 

 hooked. L. 3 inches. Michigan to Indiana. 



(II fuditontw Cope, Trans. Amer. Phil. Soc. Phila. 1800,381: Leuciscus tuditanus 



(iiintlirr, vii, 



2O3. C. tauroccphala (Hay) J. & G. Bull-head Minnow. 



r.ody stout, somewhat compressed, broad and flat above, with deep 

 caudal peduncle. Head broad and flat above, with an angle at the 

 temporal region. Muzzle broad and obtuse, less truncate than in ILy- 

 lorliynchiis nottititx. Mouth rather small, horizontal, terminal, the jaws 

 about equal, maxillary not reaching to opposite anterior margin of eye. 

 I : \ c large, 3.V in head. Dorsal inserted above veutrals, nearer snout 

 than caudal. Scales before dorsal small, in about 27 series. Dusky 

 yellowish; sides silvery, with an obsolete dark lateral baud, which ter- 

 minates in a black spot; a black spot on anterior rays of dorsal flu. 

 Depth 4.1 ; head 4}. D. 8; A. 7; scales 8-43-4; teeth 4-4, with grind- 

 ing surface. L. 3 inches. Chickasawha River, Mississippi. 

 (Albuntops tauroccplialus~B.oy, Proc. U. S. Nat. Mus. 1880, 503.) 



2O1. C. hscinattira (Cope) J. & G. 



Head moderate, the muzzle little obfcise. Mouth larger, terminal, 

 oblique, the maxillary reaching the orbit. Eye 3.J in head ; temporal 

 re- ion rounded. Scales rather small, 21 rows in front of the dorsal. 

 Lateral line slightly decurved. Plumbeous above; head blackish; a 

 taint dusky lateral baud, ending in a dusliy spot at root of caudal fin; 

 caudal lin dull red; fins otherwise plain. Head 4; depth 4*. D. 8; 

 A. 7; scales 7-44-4; teeth 4-4, little hooked. L. 3 inches. Michigan 

 to Illinois; not very common. 



(/////m;i>/\ liii-iiinhinn Cope, Cypr. IVnn. oAi, 18GG: Lenctxrn>i lttrmtunt* Giintber, vii, 



aa. Srjilrs in i In' I;itcr:il liin- :'.-J-:'.T. 



>. <'. s:>4M-|9-iiiic:iIa (Cope) J. &, G. 

 Mn.lv elongate. Head large and rather ilal, nearly as broad as dec). 

 i;\<- l;n-c, ;; in head. Muxzle remarkably thick. Mouth slightly ob- 

 lique, Hie maxillary reacliing the eye. Fifteen rows of scales in front of 

 dorsal. ( >li\ aceons, silvery white below; a leaden band along the sides 

 and a conspicuous black spot at base ol' caudal; head dusky; margins 

 of scales aliove lateral line, as well as bases of dorsal and anal fins, 

 blackish; r.ectorals, ventrals, dorsal, and anal more or less orange in 



