riddlei, Holopristes Meek [S. E.] in Eigenmann & Ogle 1907:11 [Proceedings of the United States National Museum v. 33 (no. 1556); ref. 1266] Los Castillas, Orinoco River, Venezuela. Holotype: CAS 57151 [ex IU 10896]. Paratypes: CAS 57152 [ex IU uncat.] (1), FMNH 43152 (3, missing?). Type catalog: Ibarra & Stewart 1987:47 [ref. 12367]. Types reported as missing (Ibarra & Stewart 1987:45 [ref. 12367]) but they are apparently in FMNH 43152. Original genus should have been Holopristis. Footnote indicates species was described from one specimen, anal count of 21-23 implies more specimens; types determined from information in catalogs. Apparently appeared as Hemigrammus riddlei by mistake in key on p. 13 with lower anal ray count of 19. •Synonym of Pristella maxillaris (Ulrey 1894) -- (Weitzman & Palmer 1997:237 [ref. 22743] but with wrong original genus, Lima 2024:257 [ref. 40817]). Current status: Synonym of Pristella maxillaris (Ulrey 1894). Characidae: Stethaprioninae. Habitat: freshwater.