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 Subgenus Brennus Motschulsky, 1866 Brennus Motschulsky, 1866: 311. Type species: Cychrus ventricosus Dejean, 1831 designated by Gehin (1876b: 114). Etymology. Unknown [masculine]. Diversity. Fifteen western North American species of which two extend into the Baja California Peninsula. Identification. Gidaspow (1968) revised the species and provided a key for their identification.