30. CATOSTOMID^E MOXOSTOMA. 139 



fi.56. ITI. corcgonus (Cope) Jordan. Blue Mullet. 



Muzzle couic, much projecting beyond the very small mouth; body 

 much compressed, broadly fusiform, the back elevated aud arched. 

 Dorsal rays 14. Color silver}', with plumbeous shades above; lower 

 fins white. Size small. Catawba and Yadkiu Rivers, North Carolina 

 (Cope.) 



(Ptychostomus coregonus Cope, Proc. Amor. Phil. Soc. Pliila. 1870, 472; Jordan, Man. 

 Vert, 317; Jordan, Bull. U. S. Nat. Mus. xii, 134.) 



tf Lower lip thin, forming a narrow, crescent-shaped border around the mandible. 



157. M. alburn (Cope) Jordan. White Mullet. 



Head small, 5 times in length. Muzzle prominent, but less so than 

 in M. corcyonus. Mouth moderate. Back a little elevated. Depth 

 about 3^ in length. Dorsal rays 12-14, its free border often incised. 

 Scales G-45-5. Coloration very pale; lower fins white. Size large; 

 reaches a weight of 4 pounds or more. Catawba and other rivers of 

 Xorth Carolina. 



(Ptyehostomua.albusCoTpe, Proc. Amer. Phil. Soc. Phila. 1870, 472; Jordan, Man. Vert. 

 316; Jordan, Bull. U. S. Nat. Mus. xii, 130.) 



15. M. tSjiaSassicaucai (Cope) Jordan. 



Head stout, as iu M. velatum, rather long, 4 in length, flattish above, 

 muzzle truncate, not very prominent. Mouth moderate. Back elevated. 

 Dorsal fin long, of 14 or 15 rays. Sea-green above, white below ; lower 

 fins white. Yadkin River. (Cope.) 



(Ptychostomus thalassinus Cope, Proc. Arner. Phil. Soc. Phila. 1870, 472; Jordan, Man. 

 Vert. 3115; Jordan, Bull. U. S. Nat. Mus. xii, 131.) 



ttt Lower lip full, its posterior edge truncate. 

 d. Dorsal rays 15-18 in number. 



159. M. carpi (Val.) Jordan. Carp Mullet. 



Dorsal fin largely developed, its rays 15-18 in number. Head rather 

 large, 3|-4| in length, broad above. Mouth large, with full lips. Eye 

 rather large. Body deep, strongly compressed, the back somewhat 

 elevated, the depth about 3 in length. Dorsal fin high and large, 

 larger than in any other species of the genus, the first ray about as 

 long as the base of the fin. Scales 5-43-4, quite large. Coloration 

 A T ery pale and silvery; the lower fins white. Ohio Valley, Great Lakes, 

 and northward. 



(Catoslomus carpio Valenciennes, Hist. Nat. Poiss. xvii, 457, 1844 : Catostomus carpio 

 Giiuther, vii, 20; Jordan, Man. Vert. 312; Jordan, Bull. U. S. Nat. Mus. xii, 118.) 



