32 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY^ — I. 



Falls of the Ohio, which, if distinct from C. liyalinus Cope, as Professor 

 Cope thinks, seems not to have received any other name. 



49th species, Black-tail Pallfish, RUTILUS MBLANURUS, Rutile mela- 

 nure. (p. 51.) 



Myxostoma duquesnii (Le S.) Jor. (young). 



Description incorrect and insufficient. The "15 dorsal rays" indi- 

 cates a Sucker, and the coloration is that of a young " Eed-Horse". 



*50th species, Anomal Fallfish, RUTILUS ANOMALUS, Rutile anomal. 

 (p. 52.) 



? Campostoma anomalum (Eaf.) Ag. 



This description is perhaps intended for Cam/postoma, but it is very 

 imperfect, if not erroneous. 

 tSlst species, Red Minny, RUTILUS ? RUBER, Rutile rouge, (p. 52.) 



Lytheukus species. 



Probably the male fish of one of the species of Lythrurus is intended 

 rather than a GhrosomuSy as supposed by Professor Agassiz. Lythrurus 

 ardens is abundant in the upper waters of the Cumberland. Few fishes 

 in our waters are of so "fine a purple red". 



XIX. Genus, FAT-HEAD, PIMEPHALBS, Pimephale. (p. 52.) 



52d species, Blackheaded Pat-head, PIMEPHALBS PROMELAS, Pime- 

 phale tete-noire. (p. 53.) 



PiMEPHALES PEOMELAS Eaf. 



Description fair. This species is very abundant in small streams 

 about the Falls of the Ohio. 



sides \yith an opaque band, lateral line straight ; pectoral fins with 12 rays, and 

 reaching the abdominal fins. Dorsal and anal fins with 10 rays. 



Length 1 or 2 inches. Vulgar name : White Chub, or Fall-fish. It is found at the 

 falls of the Ohio. Back slightly fulvescent, snout large and rounded, mouth hardly 

 diagonal, eyes large, iris silvery, and scales large. Tail with 30 rays. 



* Diameter one-fifth of total length, fulvous above, sides dusky, white beneath, 

 snout rounded, a vertical brown line behind the gills ; lateral line straight, raised up- 

 wards at the base ; pectoral fins yellow, oboval, short, with 15 rays ; tail unequally 

 bilobed, the upper lobe larger. Dorsal and anal fins red ; dorsal 8 and anal 7 rays. 



An anomalous fish, differing from all those of the Cyprinian tribe in the Ohio, by its 

 unequal bilobed tail, which is brownish, and has 22 rays. Mouth diagonal. Eyes 

 small; iris olivaceous gilt. Nape of the neck red, scales rather small. Length 3 inches. 

 Found in Licking River, &c. Vulgar names : Chub, Redfish, Fallfish, &c. 



t Entirely red ; tail forked. 



I add here a fine small fish, which I have never seen as yet, but it is said to live in 

 the small streams which fall into the Elkhorn and Kentucky. It is a slender fish, only 

 2 inches lont^, compressed, and of a fine purple red. It may belong to this genus, or 

 to any other of this tribe. It is commonly called Red-minny. 



