Abstract
C. vulpis (Dujardin 1844) Railliet 1915, C. petrowi Morozov 1939, and C. potos Buckley 1930 are redescribed from the lungs of black bear, U. americanus, of central Ontario [Canada]. A telamon is described in each species for the 1st time. The relationship between C. petrowi and C. schulzi Gagarin 1958 is discussed.

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