hollandi, Imparfinis Haseman [J. D.] 1911:383, Pl. 48 (fig. 2) [Annals of the Carnegie Museum v. 7 (nos 3-4) (19); ref. 2048] Rio Iguaçú at Pôrto União da Victoria, Brazil. Holotype (unique): FMNH 54244 [ex CM 2864, 230 mm]. Type catalog: Henn 1928:76 [ref. 12305], Ibarra & Stewart 1987:49 [ref. 12367], Ferraris 2007:185 [ref. 29155]. •Not in genus Imparfinis -- (Mees & Cala 1989:382 [ref. 14277]). •Valid as Pariolius hollandi (Haseman 1911) -- (Gómez & Chebez 1996:59 [ref. 23791], López et al. 2003:62 [ref. 27366], Menni 2004:83 [ref. 28131]). •Valid as Imparfinis hollandi Haseman 1911 -- (Bockmann & Guazzelli in Reis et al. 2003:415 [ref. 27061], Ferraris 2007:185 [ref. 29155], Almirón et al. 2007:823 [ref. 29443], Ortega-Lara et al. 2011:778 [ref. 31716], Mirande & Koerber 2015:34 [ref. 35117], Castro & Wosiacki 2019:471 [ref. 37139], Reis et al. 2020:465 [ref. 38364]). •Valid as Heptapterus hollandi (Haseman 1911) -- (Burgess 1989:276 [ref. 12860], Deprá et al. 2022:330 [ref. 39580]) Current status: Valid as Heptapterus hollandi (Haseman 1911). Heptapteridae: Heptapterinae. Distribution: South America: Iguaçu River basin (Argentina and Brazil). Habitat: freshwater.