30. CATOSTOMIDiE MOXOSTOMA. 141 



blaclci-sli at their bases ; lower fius white ; top (jf head, humeral bar, and 



dorsal fin dusky. Xeuse Eiver, North Carolina, (Cope.) Probably 



identical with the preceding. 



(Piychostdmus crassilahris Cope, Proc. Amer. Phil. Soc. Phila.. 1870, 477 ; Jordau, Man. 

 Vert. 311; Jordan, Ball. U. S. Nat. Mus. xii, 12(5.) 



163. M. cooMS (Cope) Jordan. 



Body llattish, the dorsal outline elevated, the form being like that of 



31. corcfjonus. Head small and conic. Mouth exceedingly small, the 



snout far overpassing it, the muzzle being much longer than in 3L 



crassilabre. Dorsal rays 14. Eye large. Coloration smokj^ above, some 



scales dusky at their bases; sides pale; lower fins white. Yadkin 



Eiver, ]S"orth Carolina. {Cope.) 



{Ptychostomufi conns Cope, Proc. Amor. Phil. Soc. Phila. 1870, 478; Jordan, Man. 

 Vert. 314; Jordan, Bull. U. S. Nat. Mus. xii, 12G.) 



ff. Caudal fin with the upper lobe longer than the lower, the two similarly colored. 



1C4. Ifl. anBSBlS'UBll (Raf.) Jordan. 



Caudal fin with the upper lobe falcate, much longer than the lower, 



at least in the adult, the lobes similarly colored. Dorsal fin short and 



high, falcate. Body compressed. Back somewhat elevated. Depth 3J 



in length. Head conic, flattish, 5^ in length. Mouth very small, much 



as in aurcohim, from which it can probably be distinguished only by the 



form of the caudal. D. 12-13, half higher than long. Scales G-4G-5. 



Ohio Valley and Great Lake region. 



{Catontomus anisurus Eaf. Ichth. Oh. 54 : Ptychostomus breviccps Cope, Proc. Amer. 

 Phil. Soc. Phila. 1870, 478; Jordan, Man. Vert. 315; Jordan, Ball. U. S. Nat. Mus. xii, 

 12G.) 



fff. Caudal tin with the lower lobe distinctly longer than the upper and differently 

 colored, the upper lobe in the adult being rod, the inferior jet-black, its two 

 lowermost developed rays and their membranes abruptly jialc (?in both 

 sexes). 

 165. ITI. pcccilnrilBii Jordan. 



Body elongate, moderately compressed, somewhat elevated forwards. 

 Depth 4.^ in length. Head about the same. Mouth medium, the lips 

 full. Dorsal rays 13. Scales large, 5-44-4. Coloration usual, except 

 of the caudal fin ; other fins all red, with blackish shadings. Size 

 small. Louisiana and Southern Mississippi. 



• (Jordan, Bull. U. S. Nat. Mus. x, 0(5; Jordan, Man. Vert. 315; Jordan, Bull. U. S. 

 Nat. Mus. xii, 129.) 



ee. Scales very small for the genua, abont 5Gin lateral line ; body moderately elongate, 

 the depth about 1 in length. 



160. ITI. ;iBbidlBlBl (Grd.) Jordan. 



Head shortish, conic, the snout not much jlfojecting, about 4 in length ; 

 eye large. Dorsal fin small, with about 11 rays, the last raindly 



