gracilis, Ptychocheilus Agassiz [L.] & Pickering [C.] in Agassiz 1855:229 [44] [American Journal of Science and Arts (Series 2) v. 19 (no. 56); ref. 5839] Willamette Falls, Oregon, U.S.A. Agassiz specimens (non-types): USNM 198 (3, lus 2 pharyngeal arches). Type catalog: Gilbert 1998:87 [ref. 23395]. On p. 44 of separate. •Synonym of Ptychocheilus oregonensis (Richardson 1836) -- (La Rivers 1994:376 [ref. 23389], Gilbert 1998:87 [ref. 23395]). Current status: Synonym of Ptychocheilus oregonensis (Richardson 1836). Leuciscidae: Laviniinae. Habitat: freshwater.
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