quadrizonatus, Chasmocranus Pearson [N. E.] 1937:93 [Proceedings of the California Academy of Sciences (Series 4) v. 23 (no. 7); ref. 12297] Tingo de Pauca, Río Marañon, Peru. Holotype: CAS 63628 [ex IU 17659]. Paratypes: CAS 63629 [ex IU 17660] (1). Type catalog: Ferraris 2007:183 [ref. 29155]. IU catalogue numbers erroneously listed as CAS numbers in original description. •Valid as Heptapterus quadrizonatus (Pearson 1937) -- (Burgess 1989:277 [ref. 12860]). •Valid as Chasmocranus quadrizonatus Pearson 1937 -- (Ortega & Vari 1986:14 [ref. 9708], Ferraris 2007:183 [ref. 29155]). Current status: Valid as Chasmocranus quadrizonatus Pearson 1937. Heptapteridae: Heptapterinae. Distribution: Marañon River basin, Peru. Habitat: freshwater.