plagiostoma, Marcusenius Boulenger [G. A.] 1898:7, Pl. 3 (fig. 1) [Annales du Musee du Congo (Ser. Zoologie) v. 1 (fasc. 1); ref. 542] Matadi, Lower Congo River, Democratic Republic of Congo. Syntypes: (3) BMNH 1898.11.12.13-14 (2) Matadi, MRAC 39 (1). •Valid as Pollimyrus plagiostoma (Boulenger 1898) -- (Gosse 1984:119 [ref. 6169], Kramer et al. 2013:17 [ref. 33002], Kiselkewa et al. 2020:[7] 706 [ref. 38315]). •Valid as Cyphomyrus plagiostoma (Boulenger 1898) -- (Stiassny et al. 2021:1686 [ref. 39000]). Current status: Valid as Cyphomyrus plagiostoma (Boulenger 1898). Mormyridae. Distribution: Western-Central Africa: Congo River (Democratic Republic of Congo). Habitat: freshwater.