Pacu Valenciennes [A.] 1847:9 Masc. Paca lineatus Valenciennes 1847. Type by monotypy. Apparently not intended as a new name, Spix mentioned. Spelled two ways by Valenciennes: Paca in vernacular heading and Pacu with species lineatus (p. 9) and as Paca lineatus on Pl. 8 (names on plates normally latinized) [see Paca Valenciennes 1836]. Should be considered in analysis of validation of Pacu Agassiz (and Cuvier). •In the synonymy of Prochilodus Agassiz 1829. Current status: Synonym of Prochilodus Agassiz 1829. Prochilodontidae.