Early in 1933, Dr. E. G. Hood of the Dairy and Cold Storage Branch, Dominion Department of Agriculture, submitted to the Dominion Entomologist some specimens of dermestid insect larvae taken in a dried milk establishment at Princeton, Ont. These insects which were passed to me, resembled larvae of the buffalo carpet beetle. Adult beetles that emerged late in March and in April, however, showed the species to be Trogoderma versicolor Creutzer (det. W. J. Brown).

The mountain pine beetle (Dendroctonus monticolae Hopk.) has killed millions of trees during the past ten years in Montana, Idaho, and eastern Washington. It was during a serious epidemic of this beetle that the writer undertook a study of the economic importance and biology of its enemies in an effort to determine what insects were the most beneficial and to work out their seasonal history so that artificial control work could be instituted, if possible, at a time that would destroy fewer beneficial insects.

The occurence of numerous breeding areas of Simulium pictipes in the vicinity of Ithaca, N. Y., led the writer to make an investigation of its biology during the course of a year that he spent at Cornell University, while making a general study of the Simuliidae of the district.

Male. Length 6.2 mm. Very dark brown; the antennae a little paler, the basal segments, the apical margin and posterior angles of prothorax, a spot on humeral umbone of each elytron half the size of the scutellum, and margins of apical abdominal segment reddish-yellow; the legs very pale reddish-yellow.