EEVIEW OF EAFINESQUE ON AMERICAN FISHES. 37 



*63d species, Red-tail Sucker, CATOSTOIMUS ERYTHRURUS, Catos- 

 tome rougequeue. (p. 69.) 



Myxostoma duquesnii (Le S.) Jor. 

 f Catostomus duquesnei Le Sueur. 

 Ptychostomus erythricrus (Eaf.) Cope. 

 Ptychostomus duquesnei (Le S.) Ag. 



Descriptiou not very good. The common " Eed-Horse" of the Ohio 

 is certainly Le Sueur's duquesnei. Professor Cope recognizes Eatines- 

 que's species as distinct, but I have not yet been able to separate it. 



+ 64th species, Kentucky Sucker, CATOSTOMUS FLEXUOSX7S, Catos- 

 tome flexueux. (p. 59.) 



Catostomus teres (Mitch.) Le S. 

 Description fair. Professor Agassiz is certainly wrong in referring this 

 species to the Cat. nigricans of Le Sueur. The description accords 

 better with Cat. teres, and the statements with regard to the habits 

 and common name point very strongly to this species, which is still 

 known everywhere in Kentucky as the "Sucker". 



t65th species, Big-mouth Sucker, CATOSTOMUS ? MBGASTOMUS 

 Catostome megastome. (p. 59. ) 

 A myth. 



* Diameter one-fifth of the length : rufous brown above, white beneath: tail oliva- 

 ceous: head convex, snout rounded: lateral line straight: dorsal fin trapezoidal, red- 

 dish with 12 rays: anal fin elongated, yellow, anal falcated, with 7 raj's. 



A fine species, not uncommon in the Ohio, Kentucky, Cumberland, Tennessee, &c. 

 Vulgar names: Red-horse, Red-tail, Horse-fish, Horse-Suckers, &c. Length about 

 one foot. Scales very large. Mouth beneath. Iris whitish, eyes black. Pectoral fina 

 yellow, elliptical, reaching the abdominals, and with 16 rays. Tail large with 20 rays. 

 Its flesh is dry and not very good to eat. 



t Diameter one-fifth of the length ; silvery, back brownish, scales rather rough, oper- 

 cule flexuose; head squared, snout gibbose truncate; lips very thick, the inferior 

 bilobed ; lateral line flexuose ; tail brown ; dorsal fin blackish with 12 rays, anal fia 

 whitish with 7 rays and reaching the tail. 



The most common species, in Kentucky, in all the streams and ponds, called merely Sucker. 

 Very good to eat. It conceals itself in the mud in winter. It bites at the hook, liv- 

 ing on minnies and little lobsters. Body thick cylindrical. From 10 to 12 inches 

 long. Head large, a deep depression between the snout and the head, mouth large 

 with fleshy lips. Ejes large, black, iris yellow, Opercule hard bony. Lower fins 

 whitish, pectorals elongated elliptical with 20 rays. Tail 20 rays,' Dorsal trapezoidal, 

 eloping behind. This fish is the most useful to keep in ponds. 



t Diameter one-fifth of the length ; blackish above, yellowish beneath, very broad ; 

 a spine at the base of the pectoral fins ; lateral line straight. 



A very doubtful species seen by Mr. Audubon. It comes sometimes in shoals in March, 

 and soon disappears. Only taken with the seine, not biting at the hook ; vulgar name, 

 Brown Sucker. The mouth is very remarkable, being broader than the head, somewhat 

 , lirojectiug on the sides ; length one foot. The head resembles that of a Cat-fish, but 

 has no barbs. Is it a peculiar genus owing to the mouth and pectoral spine? It might 

 be called Eurystomus. The yellow color covers the forehead and reaches to the anal fin. 

 Dorsal opposed to the abdominal and trapezoidal, pectorals elliptical, yellow, '■ 



