The clover or brown mite, a common pest of cultivated plants, is frequently mentioned in the literature as occurring on orchard trees as well as on a variety of grasses and herbaceous plants. Its habit of entering dwelling at various seasons has even caused it to be included in he category of household pests.

The Wartime Prices and Trade Board and Agricultural Supplies Board, co-operating with the Combined Food Board of the United Nations, have requested the assistance of Canadian technical men in determining the pesticide needs of the country.

Scotogramma nevada B. & McD. Basing my identification of this species on a male from Bishop, Inyo Co., Calif. which matches the figure of type in the ‘Contributions’ very closely, I find that the genitalia are practically identical with those of ptilodonta Grt., also figured in the ‘Contributions’ Vol. II (1) Pl. IV, fig. 14; nevada should be removed from its present association and placed as a race of ptilodonta, differing in the paler, more gray-tinted color of the primaries with rather better defined maculation.

In the course of an examination of types and other specimens of Odonata in the Hagen Collection, in the preparation of a synonymic list of the Odonata of the Nearctic Region, I found that Diplax decisa Hagen, 1874, is a synonym of Diplax [Sympetrum] obtrusa Hagen, 1867.