320 FISHES. 



1. C. feres, (Mit.) LeS. Common Sucker. White 

 Sucker. Depth about equal to length of head, 4 to 4^ 

 in length; olivaceous, sides silvery, with bright reflec- 

 tions; males with the sides roseate in spring; D. I, 12; 

 lat. 1. 63. U. S., abundant every where east of the 

 Rocky Mountains. [C. comraunis^ bostoniensis^ teres^ 

 sucklii^ etc., of authors.) 



** Lateral line with about 100 scales; snout much produced. 

 {Gatostomu8.) 



. 2. C. longirostris, LeS. Red-Sided Sucker. Long- 

 NosED Sucker. Slender, depth less than length of 

 head; sides with a bright red band, and upper part of 

 head with small tubercles in males in Spring; D. T, 10; 

 lat. 1. 110. Great Lakes, Upper Mississippi and North- 

 ward, abundant. \C. hudsonius^ LeS., G. aurora^ ^g-j 

 C. griseus and C. lactarius^ Grd. ; C. forsterianus^ (Rich.) 

 not C. forsterianus^ ^g-? which is probably C. commer- 



8. C YC LEPTUS, Rsifinesque. Suckerels. 



-= Ilhytidostomus^ Heckel. 



1. C. elongatus, (LeSueur) Ag. Black Horse. 

 Gourd-Seed Sucker. Missouri Sucker. Body fusiform, 

 not greatly compressed; head and mouth very small; 

 depth four to Ave in length; head ^\\ eye small, well back, 

 G to 7 in head; lobes of dorsal and caudal much atten- 

 uated; longest dorsal rays a little longer than head; 

 pectorals falcate, as long as head; anal fin small; scales 

 with the exposed surfaces broad; ^ jet black above, sides 

 black with a coppery luster; snout minutely tuberculate 

 in spring; $ olivaceous; D. 30; A. 7; lat. 1. 56; length 2 to 

 3 feet; weight 2 to 15 flis. Mississippi Valley, in large 

 streams. A singular species, quite unlike any other. 



