174 Storer's Synopsis of the Fishes of North America. 



24. Catostomus pallidus, Dekay. 



Back light bluish, becoming mixed with yellow, and paler on the sides ; abdomen white ; 

 dorsal and caudal dark brown, mixed with yellow ; anal with a faint tinge of yellow ; pec- 

 torals and ventrals orange. Caudal fin falcate. Scales small on the back and shoulders, be- 

 coming gradually larger towards the tail. The two portions of the air-bladder united by a 

 wide aperture. 



D. 13. P. 16. V. 9. A. 8. C. 18|. Length, 9 inches. 



New York, Dekay. 



Catostomus pallidus, Pale Sucker, Dekay's Report, p. 200, pi. 33, fig. 104. 



25. Catostomus fasciatus, Lesueur. 



Body elongated, four times and three quarters longer than high. Height of dorsal equal 

 to its length. Caudal deeply emarginated. Anal as high as the dorsal. Scales large and 

 striated ; forty-five to forty-eight in a longitudinal series. The fish, when dried, is gray or 

 plumbeous, variegated with green upon the back, with ten or twelve deeper gray lines, made 

 more conspicuous with large blackish dots ; beneath white, unspotted. 



D. 14. P. (?)■ V. (?). A. 9. C (?). Length, 15i inches. 



Mississippi, Val. 



Le Catostome ray£ (Catostomus fasciatus, Lesueur), Cut. et Val., xvii. p. 449. 



26. Catostomus planiceps, Val. 



Body rounded anteriorly, slender, compressed posteriorly; height equal to one sixth its 

 length. Profile rectilinear from the neck to the eye, from whence it descends in a very con- 

 vex curve towards the mouth. Abdomen arched. Preoperculum very broad ; operculum 

 narrow at its insertion, enlarging as it descends towards the angle of the pectorals. Dorsal 

 short, height equal to three quarters its length. Anal rounded, height a little more than 

 twice its length. Caudal emarginated,, its lobes rather longer than the anal. The pectorals 

 and ventrals are truncated. Forty-eight scales in a longitudinal series upon the sides ; the 

 radiating striae upon them are very conspicuous ; the circular ones very numerous and deli- 

 cate. A green marbling, deep upon the back and sides; in scattered points upon the white 

 belly. Fins greenish and dotted. 



D. 13. P. 13. V. 8. A. 8. C 4, 19-4. Length, 13i inches. 



Wabash River, Val. 



Le Catostome a tete plate (Catostomus planiceps, Val.), Cuv. et Val., xvii. p. 450. 



27. Catostomus carpio, Val. 



Body elongated, rounded. The third ray of the dorsal two thirds the length of the base 

 of the fin. Dorsal longer than in the other species. The length of the anal equal to one fifth its 



