In the “Canadian Entomologist” for September, 1915, T. D. A. Cockerell writes of Phyciodes ismeria (gorgone Hbn.) that the “species evidently hibernates as a larva.” Observations in Manitoba have shown this deduction to be correct. A colony of larvae discovered on Helianthus scaberrimus Ell. (rigidus Desf.) in the Aweme district, July 20, 1928, hibernated in that stage, and one specimen successfully completed its development the following spring.