Studies in Arthropod Hibernation.

Abstract

The extensive studies of Shelford (1913) on the distribution of the animals of the Chicago region were carried on during the warmer months of the year. The distribution of the same animals under the changed ecological conditions of winter has never before been reported. Herewith are presented some of the results of a study of the hibernation situation among the arthropods of the region.* These are presented as a contribution to our knowledge of winter ecology. New life history and locality data will also be found in the material here presented.