146 



72. POMOLOBUS Rafinesque, 1820. 



252. P. clirysochloris Raf. Ohio River and Lower Mississippi iutroduced 



into Lakes. 



253. P. pseudoliarengiis lacustris Jordan. Cayuga Lake. 



73. DOROSOMA Rafinesque, 1820. 



254. D. cepediaiium notatam Raf. Ohio River, Mississippi River escaped 



into Lakes. 



*CiPRlNIDAE. 



74. EX0(iL0SSU3I Rafinesque, 1818. 



255. E. niaxillingfua (Le S.) Haldeman. New York to Ohio and Maryland. 



75. SARCIDIUM Cope, 1872. 



256. S. scopifenim Cope, Missouri River, Mo. 



257. S. mirabile (Grd.) Cope. Arkansas River. 



76. CHOXDROSTOMA Agassiz, 1837. 



Type: Cyprinus nasus L. (European.) 



258. C. gardoneuiu (Val.) Cope. South Carolina, d. t. d. a. g. 



77. ACROCHILUS Agassiz, 1855. 



259. A. alutaceus Ag. and Pick. Columbia River. 



78. ORTHODON Girard, 1856. 



260. 0. microlepidotus (Ayres) Grd. California, Utah ( Yarrow). 



79. CAMPOSTOMA Agassiz, 1855. 



261. C. anomalum (Raf.) Ag. Ohio to Montana and South. 



262. C. forraosulum Grd. San Antonio River, d. s. 

 363. C nasutum Grd. New Leon. d. s. 



264. C. aikeni Cope. Pueblo, Cal. 



265. C ornatum Grd. Chihuahua River. 



266. C. placidum (Grd.) Cope. Arkansas River, d.ag. 



80. PIMEPHALES Rafinesque, 1820. 



267. P. promelas Raf. Montana to Pennsylvania, Ohio Valley and Arkansas. 



268. P. inelaiiocephalus (Abbott) J. and C. Michigan to Illinois, d. s. 



* Most of the species of Cyprinidae here mentioned from the region west of the Mississippi 

 ■River are known to the authors only from the accounts of Girard and Cope. The arrangement 

 here given is therefore to be considered as the result of our best judgment, with only the pub- 

 lislied literatureon the subject to guideus. Nearly all the species admitted from theregion east 

 of the Mississippi have been pretty thoroughly tested by one or both of the writers. We have 

 here adopted all the genera proposed by Rafinesque, which have priority of date, in which we 

 have been able to identify the typical species, whether any t ngible characters were assigned to 

 tlie genus by its author or not. If we adopt any, as t'ycleptus, C'arpiodes, etc., we must adopt 

 nil. No middle course is possible. 



