FISHES OF JSEW YORK 109 



not much esteemed as a food fish, though it is sold in large 

 numbers. 



Minytrema melanops is normally without a lateral 

 line, but this feature is occasionally partially developed and has 

 caused some confusion in assigning certain individuals to their 

 proper genus; indeed, one author has described and figured th6 

 striped sucker as two species, belonging to two different genera^ 

 having been misled by this undeveloped character. 



Genus moxostoma Rafinesque 



Body moderately elongate, sometimes nearly round, usually 

 compressed; scales large, nearly uniform in size; lateral line com- 

 plete, straight or anteriorly curved; head varying in length, sub- 

 conical; eye usually rather large, placed moderately high; sub- 

 orbital bones very narrow; fontanelle well developed; mouth 

 varying much in size, inferior, the mandible horizontal or nearly 

 so; lips unusually well developed, the form of the lower varying, 

 usually with a slight median fissure, but never deeply incised; 

 lips with transverse folds which are rarely broken up to form 

 papillae; jaws without cartilaginous sheath; muciferous system 

 well developed; opercular bones moderately developed, nearly 

 smooth; isthmus broad; gill rakers weak, moderately long; 

 pharyngeal bones rather weak, the teeth rather coarser than in 

 E r i m y z n and Catostomus, strongly compressed, the 

 lower five or six stronger than the others, which rapidly dimin- 

 ish in size upward, each with a prominent internal cusp; dorsal 

 fin nearly median, moderately long; anal fin short and high, with 

 seven developed rays; caudal fin deeply forked; air bladder with 

 three chambers. (After Jordan and Evermann) 



62 Moxostoma anisurum (Rafinesque) 



White-nosed) Sucker 



Catostomns anisuriis Rafinesque, Ichtli. Oliien. 54, 1820; Kirtland, Bost. 



Jour. Nat. Hist. V, 2G9, pi. 20, fig. 2, 1845; Stoker, Syn. Fish. N. A. 



172, 1846. 

 Catostomus carpio Gunther, Cat. Fish. Brit. Mug. VII, 20, 1868. 

 Myxostoma anisura Jordan, Man. Vert. ed. 2, 315, 1878; Bull. 12, U. S. Nat. 



Mus. 126, 1878. 



