falcifer, Chaetodon Hubbs [C. L.] & Rechnitzer [A. B.] 1958:275, Pl. 1 [Proceedings of the California Academy of Sciences (Series 4) v. 29; ref. 12072] Eastern shore of Guadalupe Island, off Baja California, Mexico, depth 100 feet. Holotype (unique): CAS 20734. •Valid as Chaetodon falcifer Hubbs & Rechnitzer 1958 -- (Burgess 1978:338 [ref. 700], Allen 1980:161 [ref. 22764], Eschmeyer & Herald 1983:225 [ref. 9277], Allen & Robertson 1994:180 [ref. 22193], Schneider in Fischer et al. 1995:1002 [ref. 22829], De La Cruz Agüero et al. 1997:101 [ref. 24545]). •Valid as Prognathodes falcifer (Hubbs & Rechnitzer 1958) -- (Blum 1989:12 [ref. 37553], Nalbant 1995:498 [ref. 23190], Grove & Lavenberg 1997:443 [ref. 24023], McCosker et al. 1997:25 [ref. 22816], Thomson et al. 2000:152 [ref. 25640], Richards & Engle 2001:180 [ref. 25759], Smith et al. 2003:302 [ref. 27125], Nelson et al. 2004:149 [ref. 27807], Love et al. 2005:130 [ref. 37547], McCosker & Rosenblatt 2010:193 [ref. 30957], Page et al. 2013:154 [ref. 32708], Fourriére et al. 2016:447 [ref. 34668], Del Moral-Flores et al. 2016:610 [ref. 34923], Kells et al. 2016:254 [ref. 35888], Love et al. 2021:170 [ref. 39279], Page et al. 2023:162 [ref. 40505]). Current status: Valid as Prognathodes falcifer (Hubbs & Rechnitzer 1958). Chaetodontidae: Chaetodontinae. Distribution: Eastern Pacific: southern California (U.S.A.) south to Pacific coast of southern Baja California Sur (Mexico), including Galapagos Islands (Ecuador). Habitat: marine.