30. CATOSTOMID^ — MOXOSTOMA. 139 



156. ITI. corcgonais (Cope) Jordan. — Blue Mullet. 



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



iiuich compressed, broadly fusiform, the back elevated and arched. 



Dorsal rays 14. Color silvery, with pkunbeous shades above; lower 



fins white. Size small. Catawba and Yadkin llivers, IS^orth Carolina 



[Cope.) 



{Plychoslomus coregonus Copo, Proc. Amer. riiil. Soc. Phila. 1870, 472; Jordan, Mau. 

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



tt Lower li]) thiu, forming a narrow, crcscont-sliaptsd border around tlie njaudible. 



157. in. album (Cope) Jordan. — White Midhl. 



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



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



about 3J 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 



North Carolina. 



(Ptychostomus albus Cope, Proc. Amer. Phil. Soc. Phila. 1870, 472; Jordan, Man. Vert. 

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



15§. M. tlialassiBlusai (Cope) Jordan. 



Head stout, as in 21. velatum, rather long, 4 in length, flatfish 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 Eiver. (Cope.) 



(Plychosioimis thalassinus Cope, Proc. Amer. Phil. Soc. Phila. 1870, 472; Jordan, Man. 

 Vert. 316; Jordan, Bull. U. S. Nat. Mus. xii, 131.) 



ttt Lower lip full, its posterior edge trnucatc. 

 d. Dorsal rays 15-18 in number. 



159. I?I. cai'E>ao (Val.) Jordan.— Ca>-j? Mullet. 



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

 large, 3§-4.^ in length, broad above. Moutli large, with full lips. Eye 

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

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

 larger than in any other si)ecies of the genus, the first ray about as 

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

 very pale and silvery; the lower fins white. Ohio Valley, Great Lakes, 

 and northward. 



(C'a<os<omM6f criryn'o Valenciennes, Ilist. Nat. Poiss. xvii, 457, 1844: Catostomus carjno 

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



