Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico Author Bousquet, Yves Agriculture and Agri-Food Canada, Central Experimental Farm, Ottawa, Ontario, Canada bousquety1@yahoo.com text ZooKeys 2012 2012-11-28 245 1 1722 http://dx.doi.org/10.3897/zookeys.245.3416 journal article http://dx.doi.org/10.3897/zookeys.245.3416 1313-2970-245-1 FFFF52503A0AFF882450FFB66D45FF8E 578462 Dyschirius perversus Fall, 1922 Dyschirius perversus Fall, 1922c: 172. Type locality: "Miami, Manitoba" (original citation). Holotype in MCZ [# 23853]. Dyschirius desertus Fall, 1925: 310. Type locality: "Olancha ( Owen's Lake) [Inyo County], California" (original citation). Holotype (♀) in MCZ [# 23850]. Synonymy established by Bousquet (1988a: 374). Distribution. This rarely collected species is known from scattered localities in the southern parts of the Prairie Provinces (Lindroth 1961a: 147; Bousquet 1988a: 373), southeastern Oregon (Harney County, CNC), northwestern (Pershing County, MCZ) and west-central (Bechtel et al. 1983: 474) Nevada, north-central Utah (Utah County, USNM), and eastern California (Fall 1925: 310, as Dyschirius desertus ; Inyo and Plumas Counties, CAS). Records. CAN : AB, MB USA : CA, NV, OR, UT