The digger wasp, S. breviceps, has been encountered frequently in the field while studying nesting bees and wasps. Ammophila pruinosa Cress., A. varipes Cress., and A. comanche Cam., according to Professor Fernald, must be considered as synonyms. It is a specics of considerable morphological variation with all intergrades occuring between the extremes. It is not a large insect but it makes up in numbers, it would seem, for what it lacks in individual size.

A small robust species, length 1.5-2.5 mm.

Front of the male deeply concave, clothed with short bristle-like hairs, sparsely granulate-punctate, surface opaque, with a long, shining, median carina; second suture of the antennal club subtransverse. Pronotum wider than long, 5.5:3.5; sides slightly rounded, narrowing on the anterior half, constricted behind the anterior margin; the constriction extends across the dorsum, widening on the disk thereby simulating a wide, deep impression on the anterior third; anterior margin is broadly rounded; the surface is moderately clothed with short setae and the punctures are large, dense, and deep.

Robert E. Birdsong published some notes on Tropaca luna in the November 1932 issue of this magazine, which were of especial interest to us as we have been working along the same lines.

In addition to the variations in ova-coloration which were mentioned the article, we have obtained ova which ranged in color from sky-blue to apple-green. In one of the few cases in which we obtained pure white ova, they turned green after a few days and never hatched. We have not noticed black micropyles.

In 1912 the writer published a preliminary list of the Odonata of the prairie provinces of Canada (Walker, 12a ), in which 49 species were recorded, including 40 from Manitoba. Since that time 23 additional species have been taken in this province and our knowledge of the distribution of those already recorded has been considerably extended. Some of these records have already been published in the “Entomological Record” and elsewhere (see list of references) but they are scattered and incomplete and it therefore seems worth while to bring all the available data together into one paper as a basis for future work on the Manitoba fauna.