CATOSTOMID^. — CIX. 319 



proposed for E. melcmops. Great Lakes, Ohio Valley 

 and South, abundant; one of our handsomest suckers, 

 strangely overlooked by recent writers. This and the 

 next, unlike most of our suckers, are very hardy in the 

 Aquarium. 



5. ERIMYZON, Jordan. Chub Suckers. 



= 3foxostotna^ Agassiz (not of Raf.) 



* No stripes along the rows of scales, body rather short and deep. 



1. E. sucetta, (Lac.) Jordan. Creek Fish. Chub 

 Sucker. Head 4 to 4^ in length; depth 2f, in adult; 

 eye 5 in head; scales crowded,. deeper than long; no trace 

 of lateral line; dusky above, brassy on sides and below; 

 very variable; young much less compressed, with black 

 bands or bars, and pale lateral and vertebral streaks; 

 spring males with six tubercles on head; D. I, 11 ; lat, 1. 40. 

 New England, S. and W., abundant. [E. ohlongus^ (Mit.) 

 Jor.] 



6. HYPENTELIUM, Rafinesque. Crawl - a - Bottoms. 



= Hylomyzon., Ag. 



1. H. nigricans, (LeS.) Jordan. Stone Roller. Hog 

 Sucker. "Mud Sucker." Depth 4f in length; head 

 4; depth of head f its length; eyes small, very high up 

 and far back; lower fins very large; pectoral nearly as 

 long as head; brownish, often beautifully marbled; D. 

 I, 11; A. 8; lat. 1. 52. Lakes and streams from N. Y., 

 S. and W., abundant; one of our most singular fishes. 

 It frequents clear streams and rapids, and it is not at all 

 a " mud fish," as some writers seem to suppose. 



7. CATOSTOMUS, LeSueur. Fixe-Scaled Suckers. 



> Acoimis and Minomus^ Grd. 

 * Lateral line with 60 to 65 scales- snout comparatively short; 

 {Decadactylus. Kaf.) 



