190 Bulletin 4~, U/iited States National Museum. 



319. MOXOSTOMA BREVICEPS, (Cop.) 



Form of ji Coregonus, with deep compressed body, small head and sharp- 

 ly conic suont, which overhangs the very small mouth. Caudal tin with 

 the ui)per lobe falcate, much longer than the lower, at least in the adult, 

 the lobes similarly colored. Dorsal fin short and high, falcate, the an- 

 terior rays IJ to IV times base of fin, the free border much concave. 

 Depth 3i in length. Head 5 to 5^ in length. Eye small, 5 in head. D. 

 12 or 13; anal long falcate, reaching beyond front of caudal. Scales 

 6-45-5. Lower fins bright red. Ohio Valley and Great Lake region, 

 abundant in Lake Erie; our specimens from Toledo, Sandusky, and Cin- 

 cinnati. This may prove identical with M. hsueuri, but the species of the 

 far north has never been critically examined, {hrevis, short ; -cc2)ii, head. ) 

 Plychoslnmus hreficepf:, Cope, Proc. Am. Phil. Soc. Phila., 1870, 4V8, Youghiogheny River, 



Pennsylvania. 

 Hloxostoma anisvrum, Jordan & Gilbert, Synopsis, 141, 1883, not of Eafinesque. 

 Moxostotiia cTdesilabre, Jordan, Man. Vcrt, Ed. v., 48, ISOO, not of Cope. 

 Cotostomus aureohts, De Kay, and probably of Cope also, not' of Le Sueur. 



320. MOXOSTOMA CONUS, (Cope). 



Body flattish, the dorsal outline elevated, the form like that of M. 

 coregonus. Head small and conic ; mouth exceedingly small, the snout 

 far overpassing it, the muzzle being much longer than in M. aureolum. 

 Dorsal rays 14, the fin high, its free border concave. Caudal deeply 

 forked, the upper lobe the longer. Ej^e large. Coloration smoky above, 

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

 and Yadkin rivers. North Carolina. Perhaps inseparable from M. hrevi- 

 ceps. {conus, cone, from the form of the snout.) 



Pti/chostomus comis, Cope, Proc. Am. Phil. Soc. Pliila., 1870, 478, Yadkin River, North, Carolina. 

 Moxostomn conus, Jordan, Bull. U. S. Nat. Mus. xii, 126, 1878 ; Jordan & Gilbert, Synopsis, 141, 

 1883. 



321. MOXOSTOMA PffiCILURUM, (Jordan). 



Body elongate, moderately compressed, somewhat elevated forward. 

 Depth 4i in length ; head 4i. Mouth medium, the lips full. Dorsal 

 rays 13. Scales large, 5-44-4. Coloration usual, except that caudal fin is 

 red, the lower lobe jet black, the lower margin abruptly white ; other fins 

 all red, with blackish shadings. Size small. Southern Mississippi to 

 Eastern Texas (Pearl, Tangipahoa, and Sabine rivers) ; not rare in sandy 

 streams of the pine woods. (Troj/c/PuOf, variegated; ovpd tail.) 



Myxosloma peeciliira, Jordan, Bull. U.S. Kat. Mus., x, 6G, 1877, Tangipahoa River, Louisiana. 



(Type, No. 21090.) 

 Moxodoma pnecilnriim, Jordan, Bull. U.S. Nat. Mus., xii, 129, 1S78; Jordan & Gilbert, Synopsis, 

 141, 1883. 



322. MOXOSTOMA RUPISCARTES, Jordan & Jenkins. 

 (Jump-rocks.) 

 Body long and low, subterete ; head very short, broad, flat above ; snout 

 bluntish, projecting beyond mouth, 21 in head; eye moderate, 4^ in head. 

 Lips full, the folds somewhat broken into papillae. Scales smaller than 

 in related species, 6-50-6, 18 before dorsal. Dorsal low and small, its free 

 edge concave, its lirst ray 1^ in head. Caudal short, lunate, its lobes 



