FEMALE. Dimensions of unengorged holotype–1.2 mm. (to tip of scapula) x .78 mm. Colour–pale, dirty white, engorged specimens pale and yellowish.

Capitulum. Length 340 microns (tip of hypostome io dorsal ridge); width (at cornua) 300 microns. Surface of basis capituli smooth and impunctate. Cornua heavily chitinized but not prominent.

The genus Clistomorpha, as considered by Curran in 1927 (Can. Ent., LIX, 297), contains representatives of a number of distinct genera, namely Clistomorpha Townsend and Hyalomyodes Townsend of the Gymnosomatidae, as well as of Psalidopteryx Townsend and Neopsalidopteryx n. gen. of the Exoristidae.

The geometrid larvae feeding on spruce form a large and varied group. In collections taken from all parts of Canada where spruce is found, the Forest Insect Survey has identified 31 species (Brown, 1). To the best of the author's knowledge, there are descriptions for only 16 of these species. In this and the two following papers, seven more are described and two are redescribed.

Collecting in the mountains of central New Mexico during the early summer of 1940 produced a race of Pieris somewhat resembling Pieris napi pseudonapi B. & McD., but a comparative examination proves it to be different from that insect in quite a number of recognizable and distinct characteristics.

From time to time during the past, the writer has endeavored to collect cicadas in Alberta, his boyhood home, whenever the opportunity presented. Some of the specimens reported here were taken many years ago when the writer was still a boy; others were taken at a more recent date. The following note is written to bring up-to-date infnrmation concerning the cicada fauna of Alberta.