Rupert's excellent revision (1949) has greatly clarified the classification of the North American species of P1agodis. One of the most interesting features of Rupert's work was his demonstration by rearing that what had previously been considered a distinct species, P1agodis keutzingaria Packard, was in fact the spring generation of the aestival P. phlogosmia Guenée. By analogy it followed that P. schuylkillensis Grossbeck must be considered the summer generation of P. purpuraria Pearsall and P. arrogaria Hulst that of P. fervidaria Herrich-Schaeffer. Rupert was thus able to group in three species elements that had previously been distributed among six.

The balsam woolly aphid, Adelges piceae (Ratz.) (Adelgidae, Homoptera), originally introduced from Europe, was reported on grand fir, Abies grandis (Doug.) Lindl., in the Willamette Valley by Keen (5) around 1930. Serious outbreaks of this insect were first recorded on subalpine fir, A. lasiocarpa (Hook.) Nutt., in Oregon and Pacific silver fir, A. amabilis (Doug].) Forb., in Washington in 1954 ( 3 ) . At present about 600,000 acres of subalpine and Pacific silver firs are heavily infested in the Pacific Northwest.

This study was undertaken as part of an investigation of the physical and biological requirements of the white pine weevil Pissodes strobi Peck. The broad aspects of the main problem will be given in a later paper and it need only be mentioned here that the immediate objective was to define the requirements of the weevil in terms of measurable factors of the environment. During the field studies, observed variations in behaviour between individual weevils within the limits of a single habitat indicated the need for additional studies that would permit analysis of behaviour in relation to previous conditioning. The responses of the adult weevils to diffuse and discrete light sources, and the effect of temperature on these responses, were investigated in conjunction with field studies of behavioural changes during relatively stable and variable weather conditions, in an attempt to explain observed weevil movements.

Grammonota Emerton, 1882, is one of the many uniform genera that constitute the large and complex family Erigonidae. All of the 28 species and one subspecies recognized by the present writer are American in range, and representatives occur from southwestern Alaska and James Bay in the north to Central America and the West Indies. A few species are arctic-alpine, or are restricted to the Pacific coast, but most occur east of the Rocky Mountains from southern Canada to the Gulf States.

Semium was described bv Reuter (1875) and placed in the division Cyllocoraria of the subfamily Capsina. Reuter (1910) later chanped the subfamily Capsina to Heterotomina, and the division Cyllocoraria to Halticaria. Van Duzee (1916) changed Reuter's Heterotomaria to Orthotylinae, and placed Semium in the division Orthotylaria, tribe Orthotylini. Knight (1923) proposed the tribe Semiini for the Genus, but Carvalho (1955) rejected this arrangement and placed the genus in the Orthotylini. Studies on the female and male genitalia by Slater (1950) and Kelton (1959) suggestee that the genus is referable to the Phylinae. In this paper the genus is transferred from the Orthotylinae to the Phylinae. tribe Phylini, on the basis of the male and female genitalia and the tarsal claws.

In the summer of 1958 a virus disease of larvae of Neodiprion swainei Midd., a serious defoliator of jack pine (Pinus banksiana Lamb.), was investigated. The experiments were carried out near St. David de Falardeau in the Lake St. John region, Quebec, where the forest is largely composed of 15- to 20-year-old jack pine. The infestation was three years old, and judging by the production of eggs, had reached serious proportions in some places.

In recent years there has been a renewed interest in aphids, primarily as to their role in the dissemination of plant viruses. As a result many new species are being discovered, even on some of the more common plants. The notes and descriptions that follow arise from collections made in British Columbia.

Three specimens of a species of leafhopper new to the Niagara Peninsula were collected during 1956 along the wooded bank of Niagara River below Queenston, Ontario; they were identified by Mrs. C. J. Williams, Entomology Division, Ottawa, as Orientus ishidae (Mat.) and are in the Canadian National Collection. According to Oman (1949), this is an introduced Japanese species which lives on willow and is widely distributed. Presumably Oman's statement is based on collections made in the United States as Mrs. Williams stated (in litt.) that this was the first record from Canada.

In 1954, the use of Methocel (methyl cellulose) as a sticker in laboratory studies of bacterial pathogens was described (1). Although satisfactory for laboratory use, Methocel is not practical for field use because of its solubility in water. In a field experiment 1½ inches of rain in two hours reduced by 80 per cent the residual count of bacteria applied as a suspension in Methocel. In a search for a more satisfactory sticker for field use, colloidal dispersions of vinyl chloride polymers and copolymers in water have been tested. These trials have been sufficiently encouraging to justify a preliminary report of the results.

During studies on the aster yellows virus in the Niagara Peninsula of Ontario, the dryinid parasite Epigonatopus plesius (Fenton), has been observed since 1956 on the nymphs and adults of the six-spotted leafhopper, Macrosteles fascifrons (Stål). During 1956 adult females of E. plesius reared from this host were identified by Mr. K. V. Krombein of the U.S. National Museum, Washington, D.C. Dr. W. R. M. Mason (1957) Entomology Division, Ottawa, wrote, “This is a very rare species. There are only two collections in Washington and only yours in the Canadian National Collection”.