Three mirids, Diaphnidia pellucida Uhler, Hyaliodes harti Knight, and Campylomma verbasci (Meyer), are effective predators of the red mite and probably of the clover mite from early in June until the latter part of July. These three species are the only important predacious mirids under the conditions of the present spray practices in Nova Scotia. Gilliatt (2) has given an account of the life-histories of the three specics and discussed their importance in the natural contrnl of the red mite, and his account need not be repeated here. The three mirids are often the only important predacious species in many commercial orchards during the summer months because of the destruction of I. tiliae and H. faurei by the sulphur sprays emploved around the bloom period. Their presence in such orchards is in itself evidence that neither bordeaux mixture nor flotation sulphur reduces their numbers. Observation on a considerable number of occasions showed that iron carbamate has no effect on these mirids. An opportunity to test some of the common spray chemicals on two of the species was presented in the F. Palmer orchard at Berwick in 1947. Two trees were sprayed with each of the materials listed, and the insects were collected as they dropped on two trays, of 32 square feet each, which had been placed beneath the trees.

The following notes are based on the material in the Canadian National Collection and in the collections of the United States National Museum, the Museum of Comparative Zoology, and the Philadelphia Academy of Natural Sciences.

In all of the three American species of Lyperopherus, the flattened side margins of the pronotum are gradually widened posteriorly to include the outer of the basal impressions. All are flightless and have the elytra widest slightly behind the middle.

A species of tent caterpillar which occurs in the prairie region of Canada, from southern Manitoba west to the foot-hills of Alberta, and which often occurs as a pest on rose, cherry, and gooseberry has been referred to as Malacosoma fragilis (Stretch) (properly fragile). In 1881, Stretch described fragile from Virginia City, Nevada, and an examination of Stretch's type in the American Museum of Natural History showed that this species possesses a grey ground colour and in this respect is quite unlike the fawn-coloured species from the Canadian prairie.

RecentIy I received from Dr. Clifford O. Berg a series of specimens of a diapriid reared from puparia of Sepedon fuscipennis Loew, a sciomyzid fly, the biology of which he has been investigating at Sodon Lake, Oakland County, Michigan. The species falls in Phaenopria as that genus is currently recognized, and it is apparently ancdescribed. At the suggestion of Dr. Berg, I am naming it in honor of Mr. Gustavus D. Pope, the owner of Sodon Lake which he has made available for research to the Cranbrook Institute of Science for a period of three years. Mr. Pope, who is a trustee of the Cranbrook Institute, has a serious interest in the research sponsored by that organization and has done a great deal to make it possible. It is, therefore, with particular pleasure that I dedicate this new species to him.

Checking some North American genera of bark-beetles I found a series of Alniphagus Sw. which does not agree with the common species Alniphagus aspericollis from California and British Columbia and doubtless represents a new species. The genus therefore comprises now three distinct species, Alniphagus alni Nijs. from Japan and the Far East, A. aspericollis from British Columbia down to California and the new species A. hirsutus from Alnus sitchensis in B.C.