acutus, Alburnus Lapham [I. A.] 1854:101, Figs. 1-2 [Annals of Science (Cleveland, Ohio) v. 2; ref. 20824] Lower part of Milwaukee River (below first dam), Milwaukee County, Wisconsin, U.S.A. Syntypes: MCZ 1741 (8, discarded in 1938), UMMZ 85896 [ex MCZ 1741] (2). Type catalog: Gilbert 1978:23 [ref. 7042] as no types located; see Hubbs 1945:16 [ref. 10745]; Gilbert 1998:34 [ref. 23395]. Also appeared as new in Lapham 1854:96 [ref. 36678]. •Synonym of Notropis atherinoides Rafinesque 1818 -- (Gilbert 1978:23 [ref. 7042], Gilbert 1998:34 [ref. 23395], Scott & Crossman 1998:440 [ref. 24570]). •Synonym of Notropis atherinoides Rafinesque 1818, but a valid subspecies -- (Scharpf 2005:27 [ref. 28940]). Current status: Synonym of Notropis atherinoides Rafinesque 1818. Leuciscidae: Pogonichthyinae. Distribution: Lake Michigan [subspecies acutus, presumeably extinct]. Habitat: freshwater.