adustus, Couesius Woolman [A. J.] 1894:57 [Bulletin of the U. S. Fish Commission v. 14 (art. 8) (for 1894); ref. 4804] Wrongly Río de las Conchos, Chihuahua, Mexico [probably Minnesota, U.S.A.]. Syntypes: not BMNH 1894.5.12.31 (1) [from Woolman], FMNH 6706 (1) [but not this species], CAS-SU 642 (2). Type catalog: Böhlke 1953:31 [ref. 12291], Gilbert 1998:34 [ref. 23395] with remarks on locality. •Synonym of Couesius plumbeus, subspecies plumbeus (Agassiz 1850) -- (Gilbert 1998:34 [ref. 23395]). Current status: Synonym of Couesius plumbeus (Agassiz 1850). Leuciscidae: Plagopterinae. Habitat: freshwater.