Ondatra zibethicus (Linnaeus, 1766) . Syst. Nat., 12th ed., 1:79.

TYPE LOCALITY: E. Canada, no exact locality, probably E. New Brunswick .

DISTRIBUTION: North America, north to the treeline, south to the Gulf of Mexico, Rio Grande and lower Colorado River valleys. Introduced into Czechoslovakia in 1905; now widely distributed in the Palearctic.

COMMENT: Includes obscurus; see Cameron, 1959, Bull. Nat. Mus. Can., 154:85, and Pietsch, 1970, Z. Saugetierk., 35:257-288. Reviewed by Willner et al., 1980, Mamm. Species, 141:1-8. See Hoffmann, 1958, Die Bisamratte, 260 pp., and Corbet, 1978: 106 for discussion of distribution.

ISIS NUMBER: 5301410008083001001.