The four species of flies here described as new belong in the genus Parasyntormon as established by Wheeler in 1899. Curran and Becker, among the more recent writers, have pointed out the very close relationship of Parasyntormon to Syntromon Loew, the latter writer having united the two genera under the name Syntormon.

A quick, easy method of transferring large numbers of living grasshoppers from collection cages to field cages was developed from the suction collector idea by the writer during 1940. The vacuum created in the intake manifold of a car engine was used to operate an aspirator such as is in general use for picking up living insects.

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.

Plebeius scudderi empetri Frmn. was described from material taken in early July, 1936, in an Empetrum bog not far from the town of Baddeck on Cape Breton Island. Later in July of that year several similar bogs were observed in various parts of Nova Scotia, but with the exception of a single worn specimen captured in the Cape Canso region, no specimens of empteri were observed. This was thought to be due to the lateness of the season.

Antepenultimate Instar: Width of head 1.4 to 1.5 mm. Body 10 to 11 mm. in length and 1.5 to 1.9 mm. in width. Epicranial index 1.2 to 1.3. Ocelli 1 and 2 often contiguous but occasionally slightly separated. Crochets on ventral proleg number about 40.

Penultimate Instar: Width of head 1.9 mm. Body 12 mm. in length and 1.5 mm. in width. Epicranial index 0.8. Ocelli 1 and 2 contiguous. Crochets on the ventral proleg number 35.

Egg: Ovate in shape, bluish green in colour, the surface divided by reticulations into small hexagonal areas. Laid singly on the needles of host tree.

First Instar: Head width 0.23 mm. Body 2.0 mm. in length and 0.23 mm. in width Brownish green body with light brown head.

Second Instar: Head width 0.5 mm. Body 4.6 mm. in length and 0.5 mm. in width. Body lined alternately with green and light green stripes. Spiracular line greenish white. Head brownish green.

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 69th Annual Report of the Entomological Society of Ontario (1938), pages 56 and 57, the writer compares the Rhagoletis reared from dogwood (Cornus Amomum Mill.) with the morphologically similar apple maggot from apple and hawthorn.

Male. Body almost entirely brown with the meso- and metathoracic tergites deep pitch-black. The three posterior abdominal segments are more opaque, somewhat deeper brown and show traces of geminate dorsal lines; ventrally these segments are paler.

For the past few years I have been working spasmodically on the species of this difficult group with a view to clearing up he existing confusion in nomenclature. To Smith must be given the credit for recognizing the fact that a greater number of species existed in the group than had been suspected by the older authors.

The following descriptions of five new genera and species of Tachinidae are based upon material received from several sources as indicated below. Most of the species have been standing in my collection for a number of years pending the accumulation of longer series. My thanks are due A. R. Brooks for the loan of some additional material recently discovered in the extensive tachinid collections in the Canadian Department of Agriculture. The type or paratype specimens, of the two species represented by this material, are returned for deposit in the Canadian Collection, as detailed under the descriptions.

A study of the caddis flies of Waskesiu Lake was carried out during the summer of 1940 as part of the general program of limnological investigations which have been conducted in Prince Albert National Park, Saskatchewan, since 1928. The importance of caddis flies in the ecology of the lake had been recognized since they provide much food for fish in the near shore reginn.

Since the publication of my revision of the genus Exenterus (U. S. Dept. Agr. Misc. Pub. No. 354, 1940) several pertinent items of interest have come to my attention.

From the Canadian Department of Agriculture, through G. Stuart Walley, I have received specimens of two undescribe species, one in considerable nnmbers, the other represented by only a single specimen.

Flies of the genus Thaumatomyia Zenker (=Chloropisca Loew) are small but common, and identification is frequenlly requested for faunal, ecological or other studies. Their highly polished, glabrous, usually yellow and black striped appearance stands out sharply among the many kinds of small dark flies captured by sweeping.