Sympistis kolthoffi Auriv. originally described from Greenland (1890, Anarta kolthoffi Aurivillius, Bihand Till. K. Sv. Vet.-Akad. Handl., XV, 20, pl. 2, fig. 1) as a race of the European S. zetterstedti Staud., and has not been previously recorded from North America. Specimens of kolthoffi from Churchill, Manitoba, agree very favorably with the original description and figure, and appear specifically distinct from specimens of labradoris from the same and other Canadian localities.