angustifrons, Anoplopterus Boulenger [G. A.] 1902:42, Pl. 10 (fig. 4) [Annales du Musee du Congo (Ser. Zoologie) v. 2 (fasc. 2); ref. 562] Ubangi River at Banzyville, Democratic Republic of Congo, about 4°18'N, 21°11'E. Syntypes: BMNH 1901.12.26.39-40 (2), MRAC 1313 (1) Type catalog: Ferraris 2007:27 [ref. 29155]. •Valid as Amphilius angustifrons (Boulenger 1902) -- (Skelton & Teugels 1986:54 [ref. 6192] as augustifrons, Burgess 1989:113 [ref. 12860], Diogo 2003:428 [ref. 26979]). •Valid as Tetracamphilius angustifrons (Boulenger 1902) -- (Roberts 2003:104 [ref. 26744], Ferraris 2007:27 [ref. 29155]). Current status: Valid as Tetracamphilius angustifrons (Boulenger 1902). Amphiliidae: Leptoglaninae. Distribution: Central Africa: Congo River basin. Habitat: freshwater.