The Montreal Branch of the Entomological Society of Ontario, passed its seventy-fifth anniversay on October 16th, but did not hold a special meeting on that date as we had anticipated it at our annual meeting on May 15th and had previously invited the Parent Society to hold their annual meeting in Montreal as a Conunemorative Anniversary Celebration. When our invitation was accepted we were pleased, and we greet you here, and trust you will enjoy meeting with us at the three Institutions that have aided greatly in our pursuit of Entomology, namely, McGill University Université de Montreal and Macdonald College.

Whether Economic Entomology can be an exact science is, I think, a question in which we should all be interested. I propose therefore to examine it with the care that it deserves though I will try to make the discussion as brief as possible.

Broadlly speaking, the sciences can be divided into two classes: the speculative sciences, whose object is simply the discovery of truth: new facts or new laws; and the practical sciences, whose objest is the production of facts: causing something new to happen.

This paper deals with the orientation reactions exhibited by larvae and adults of the spruce budworm, Choristoneura fumiferana (Clemens), (12) in response to stimulation by light. The insect is an important pest of the coniferous trees, Abies balsamea Mill, and Picea spp., which compromise the pulpwood stands of the forests of northeastern North America. Hence, at present, it is the subject of many investigations. The work reported here is part of an investigation designed to provide data for the development of studies of the effects of weather and climate upon the spruce budworm.

A study of embryological development in grasshopper eggs was made as a part of a general study of the effect of weather on the seasonal development of grasshoppers. The variation in the stage of development in which eggs of Melanoplus bivittatus (Say), Melanoplus mexicanus mexicanus (Sauss.), and Camnula pellucida (Scud.) entered the winters of 1941 to 1947 in different areas of the Prairie Region of Canada is presented in the following paper.

A medium sized non-maculate species, allied to and resembling H. strigatus Roberts but more robust; elytra vittate as a result of the blackened strial punctures. Elytra of the female shining.

Male: Length 3.30 to 3.45 mm.; width 1.65 to 1.80 mm. Dorsal surface fulvous; base of head often piceous; large punctures across base of pronotum not blackened, though appearing so at a hasty glance because of a pattern of muscle attachments seen through the clear integuments; elytra non-maculate except for a small subsutural spot on an aggregation of punctures near the apices; punctures of elytral striae 1 to 8 blackened and narrowly annulated, those of 8 and 9 immaculate except a few apically, suture blackened in at least apical half. Ventral surface fulvous, except first three abdominal sternites which are piceous or black.

Recent examination of a large number of Rhyacophilidae has resulted in the establishment of some very interesting distributional records as well as the recognition of several new species. New species, descriptions of hitherto unassociated females or little known species, and new distributional records in the Rhyacophila, Glossosoma, Anagapetus, Agapetus, and Atopsyche are discussed in this paper I would like to take this opportunity to thank Dr. L. J. Milne of the University of Vermont for the generous loan of his Rhyacophila holotypes, fourteen of which are figured and briefly described herein. Material from the University of Massachusetts is designated as (Mass.), from the University of Minnesota as (Minn.), from the American Museum of Natural History as (AMNH), from the North Carolina Department of Agriculture as (NC) and from the California Academy of Sciences as (Cal.). Unless designated otherwise types are in the writer's collection at the University of Wyoming.

In a previous paper the writer slated that only two native parasites, Labrorychus prismaticus (Nort.) and Aplomya caesar (Aldrich), regularly attack the European corn borer, Pyrausta nubilalis (Hubn.) in Canada. Melanichneumon rubicundus (Cress.) is occasionally reared from the corn borer in the Eastern United States and a few adults were received with some adults of the European parasite Phaeogenes nigridens Wesm. A breeding stock was established with a view to possible future liberations in areas in Canada where it has not been recorded. It was found however, that while M. rubicundus will attack the corn borer in the laboratory it does so with such a degree of reluctance that it must be assumed that the attack in the field occurs only in the absence of more desirable hosts. In the laboratory this parasite attacks Loxostege sticticalis (L.) very readily and the data presented herewith are from material reared on Loxostege.

The spruce budworm, Choristoneura (Archips) fumiferana (Clem.) (Tortricidae) has long been considered one of the most injurious forest insect pests in Canada. A general account of past outbreaks and an outline of its biology and bahits are given by Swaine and Craighead (1924). At the time these studies were made investigations were also undertaken by J.D. Tothill and A.B. Baird on the parasites and other natural control factors of the spruce budworm, but although a good deal of work was done, brief reference to which is made by Hewitt (1911, 1912, 1913), very little has been published.

There appear to be very few published records of the species of the Aquatic Coleoptera found in Newfoundland and Nova Scotia. According to Hatch (1928, J. New York Ent. Soc., 36:335-354) only two papers deal with the Coleoptera of Nova Scotia and in each of these papers only a single species of the families of the aquatic beetles is named. Hatch also gives four references to the water beetles of the Labrador Province of Newfoundland; from these I have been able to extract a total of five species listed from Newfoundland proper and a further two species from Nova Scotia. An exhaustive search of literature, including the Leng Catalogue and Supplements, has produced a total of 31 species as previously known from Newfoundland proper, of which two species (Hydroporus obscurus Sturm & Oreodytes alpinus Payk.) must be deleted as erroneous; also 6 species as previously known from Nova Scotia, of which one species (Dytiscus marginalis L.) must be deleted as recorded in error.