139 



3— C. duquesiiii. 



Red Horse, or Pittsbirg Sucker. 



The lieiglit of the body is nearly erjual to tlie lengtli of tlio 

 liead^ wliich is one-foiirtli of the total (without caudal). The 

 strong scales are of nearly the same size over the entire body. 

 Back and forehead dusky-olive and coppery; sides coppery: 

 abdomen white. Length, 12 to 19 inches. 



Fin-rays:— D. 14; P. 17; V. 10; A. 9; C. IS. 



C. duquesnll,, Lcsueur, Journ, Ac. Nat. Sc.^ Philad., I. ]». 

 105; Kirtland, Boston Journ. Nat. Hist., Y. p. 268, id. 20, 

 fig. 1, pi. 21, tig. 2. 



— erijtiiruriis, Eafinesque. 



Ptycliostomus duquesnii, Agassiz, Am. Journ. tSc. & Arts, 

 XIX. 1854, p. 90. 



Found in the Youa;hio2,hanY River. 



4— C. maciilosiis, 



Jack Mullet, or Black Sucker, 



Head large, square, declivous. Eyes small. Lateral line 

 straight. Eeddish, with irregular black blotches. Pectorals 

 and ventrals reddish, dashed with black; anal and caudal 

 reddish white; dorsal bluish, with black marks on the rays. 

 Lengeh, 6 to 9 inches. 



Fin-rays:— D. 12; P. IG; V. 9; A. 9; C. 18. 



C maculosus, Lesueur, Journ. Ac. Nat. Sc. Philad., 1. 1817, 

 p. 103. 



This beautiful Sucker lives in the stony and rocky portions 

 of our creeks, in places where the current ripples. Specimens 

 may be seen resting motionless on a fiat rock at the bottom of 

 the Vv^ater, and darting away with instant rapidity upon the 

 approach of man. The larger ones take shelter beneath rocks, 

 with cavities on the underside^ and there they remain except 

 when tempted away in search of food. This species inhabits the 

 upper Potomac, the Patapsco, and several of our creeks near 

 •Baltimore. 



Acad. Coll. 



