REPORT OF COMMISSIONER OF FISH AND FISHERIES. [20] 



189. Moxostoma conus Cope. Vse. (163) 



190. Moxostoma auisurum Rafinesque. Vw. (164) 



191. Moxostoma pcecilurum Jordan. Vsw. (165) 



192. Moxostoma cervinum Cope. Vse. (167) 



66.— PLACOPHARYNX Cope. (69) 



193. Placopharynx carinatus Cope.i Vw. (168) 



67.— QUASSILABIA Jordan & Brayton. (70) 



194. Quassilabia lacera Jordan «fe Brayton. Vw. (169) 



Family XXXII.— CYPRINID^. (31) 

 68.— CAMPOSTOMA Agassiz. (71) 



195. Campostoma ornatum ^ Girard. Vsw. (170) 



196. Campostoma anomalum Rafinesque. Vw. (171) 

 196b. Campostoma atwmaJnm prolixum StoTer. Ve. (172) 



197. Campostoma formosulum 3 Girard. Vsw. (173) 



69.— OXYGENEUM Forbes. 



198. Oxygeneum pulveruleutum* Forbes. Vw. 



70.— ACROCHILUS Agassiz. (72) 



199. Acrochilus alutaceus Agassiz & Pickering. T. (174) 



71.— ORTHODON Girard. (73) 



200. Orthodon microlepidotus Ayres, T. (175) 



72.— LAVINIA Girard. (74) 



201. Lavinia exilicauda Baird & Girard. T. (176) 



73.— CHROSOMUS Rafinesque. (75) 



202. Chrosomus erythrogaster Rafinesque. V. (177, 179) 



203. Chrosomus oreas 5 Cope. Ve. (178) 



74.— ZOPHENDUM Jordan. (76) 



204. Zophendum siderium Cope. R. (180) 



205. Zophendum plumbeum Girard. Vsw. (181) 



the snout a little projecting, mouth rather small, the lower lip full, formed as in M. 

 aureolum ; eye small, about 5 in head; dorsal fin unusually low and sm.all, little 

 elevated in front, its first ray, when depressed, reaching about to the middle of the 

 last ray ; caudal not deeply forked, the lobes equal ; lower fins moderate. 



Smoky yellowish-brown above, yellowish- silvery below ; lower fin.s whitish; none 

 of the fins red in life; the membranes of the dorsal always dusky. Head 4^ to 4f ; 

 depth 4 ; D. 12 ; scales 6-45-5 ; teeth as in M. aureolum. Streams of Texas to Arizona. 



' Professor Gilbert thinks that this species may be the original Moxostoma anisurum 

 of Rafinesque. 



' The types of Campostoma ornatum have 73 scales in the lateral line. Those of C. 

 nasutum agree in all respects with the ordinary C. anomalum. 



'The types of Campostoma formosulum have 46 scales in the lateral line. 



* Oxygeneum prdvcrulcntum Forbes, Bull. Ills. Lab. Nat. Hist., 1885, 136. Peoria, His. 



^Chrosomus oreas is a doubtful species, which I have not yet examined. C.eos is 

 doubtless indentical with C. erythrogaster. 



