Potamosilurus velutinus (Weber, 1907) Hemipimelodus velutinus Weber, 1907: 225. Type locality: Lake Sentani and mouth of Tami and Twarin rivers, Irian Jaya, Indonesia. Syntypes: AMNH 9478, FMNH 53592, NMW 8222-23, RMNH 8001, ZMA 112654-56. Hemipimelodus papillifer Herre, 1935: 390. Type locality: Sepik River at Timbuke, New Guinea. Holotype: FMNH 17211. Paratypes: FMNH 17212, SU 24453. Distribution: Northern New Guinea. Countries: Indonesia and Papua New Guinea. Habitat: Freshwaters. Maximum size: 500 mm SL. Material examined: AMS I.27410-001 (1 c&s), Papua New Guinea, Angoran, Sepik River, fish market; CAS 63536 (3 al, 67-235 mm TL), Papua New Guinea, Madang, Ramu River where it is crossed by bridge on Brahman rd. north side near Usema village; freshwater; elev. 125m; CAS 63411 (4 al, 212-228 mm TL) (1 c&s), Papua New Guinea, Madang, just south of boat launch area, Bunapas Mission, 45 km upstream, elev. 5m; USNM 217321 (3 al, 187-230 mm TL), Papua New Guinea, Ramu River near Mt Otto.

Published as part of Alexandre P. Marceniuk & Naércio A. Menezes, 2007, Systematics of the family Ariidae (Ostariophysi, Siluriformes), with a redefinition of the genera., pp. 1-126 in Zootaxa 1416 on page 102