Although the common aphids that infest Solanum tuberosum L. in North America and Europe appear to be the same, different scientific names are used for them on the two continents. This unsatisfactory situation is confusing to both entomologists and virologists and shouId be corrected. This paper presents the preferred scientific names. Only the most important synonyms are discussed.

Illustrations of insect behaviour often convey the information more clearly than written descriptions. Since most of us cannot draw well and drawings do not depict the quality of movement, the alternative lies with photography. Individual frames clippkd from a motion picture sequence probably show a pattern of behaviour most suitably, but not all research establishments possess the necessary equipment. Even Gith cine apparatus, the difficulty of holding the subject within the field of focus and still permitting it to behave normally, presents a problem.

Studies of the effects of widespread DDT spraying on the parasite complex of the spruce budworm constitute part of a comprehensive program of biological assessment of the New Brunswick forest spraying operations that began in 1952. In the years 1952-1958 these operations covered over 9,000 square miles, practically all the forested area of the northern part of the Province. Almost all areas have been treated two or more times; approximately 80 square miles of the original outbreak area has been sprayed five times, and an experimental plot has been sprayed in each of the seven pears. This has involved the use of over 7,000,000 pounda of DDT, applied mostly at the rate of one-half pound per acre in one-half U.S. gallon of oil solvent.

The artificial feeding of aphids has received renewed attention in recent years and many attempts met with limited success. Maltais (1952) reported on a simple apparatus for feeding aphids aseptically on chemically defined diets. At the time, several investigators on the artificial feeding of homopterous insects had succeeded in getting the insects to feed temporarily on special food mixtures through different types of membranes, but the insects had neither grown nor reproduced.

In May, 1956, large numbers of small caterpillars were found on Japanese plum trees in an orchard near Queenston in the Niagara Peninsula, Ontario. The owner stated that he first noticed them in 1955 when they got on his clothes while he was cultivating the orchard. In June, 1956, the caterpillars were also found on ornamental plum, Prunus cerasifera Ehrh. var. pissardii Koehne, in nurseries at Niagara-on-the-Lake and Fonthill by nursery inspectors.

Malaria, a protozoan disease caused by infection with various species of Plasmodium, is transmitted solely by mosquitoes in nature. The transmission of human malaria depends entirely on certain species of Anopheles. The occurrence of a number of cases of Korean vivax malaria in Canada gave ris: to some speculation as to the possibility of the disease becoming re-established in the country (Neufeld 1952, O'Rourke 1953, 1955).

In recent years considerable work has been devoted to the Bacillus species which are pathogenic for insects. Some of these produce a proteinaceous parasporal body or crystal (8) which is toxic to a large number of insect species (11, 13). The effect of a paralytic toxin derived from cultures of Bacillus thuringiensis var. sotto on the silkworm (Bombyx mori L.) has been studied in some detail (2, 3, 4). A similar toxin has been extracted from Bacillus thuringiensis var. alesti by Fitz-James et al. (5), from B. thuringiensis var. thuringiensis by Hannay and Fitz-James (personal communication), and Bacillus entomocidus var. entomocidus Heimpel and Angus (12, also unpublished results).

Frons and scape rosy pink; vertex yellowish buff; labial palpus on outer surface rosy pink, on inner surface yellowish buff; maxillary palpus yellowish buff; antenna of male very narrowly bipectinate, light buff; thorax and abdomen above rosy pink with some buff scales; body beneath whitish buff; legs light yellowish buff. Forewing above light yellowish buff; costa broadly pink in basal third; sparse fuscous dusting in basal angle; traces of a fuscous discocellular bar; a fuscous postmedial line, concave outward opposite cell, convex and wavy from M2, to Cu2, then retracted nearly to base of Cu2, then wavy and oblique inward to inner margin; entire space beyond postmedial line deep rosy pink except for a narrow yellow crescent on outer margin in front of tornus; fringe yellow. Hind wing above yellowish buff; a small fuscous sub-basal patch; a fuscous postmedial line, excurved to Cu1, then broken, irregular and obsolescent; space beyond postmedial line rosy pink from apex to Cu1. Markings of under surface like those of upper surface, but pink areas replaced by violaceous grey. Expanse 19 mm.

The two species described herein bring the total number of known species of New World Cyrtinini to 17. Since the descriptions are scattered and no key to these species Gas previously available, a brief key to the genera and species in the tribe is presented, being based in part on the descriptions only. I examined the species of Haldeman and Fisher, but not those described by Pascoe, Gahan, Hope, Bates, and Cameron. References to the original descriptions are given by Leng (1920, p. 281) and Blackwelder (1946, pp. 619, 620, and 1957). In Blackwelder's 1946 work the date given for the description of Sciocyrtinus Fisher on page 620 should read 1935 instead of 1934. I wish to thank Mr. W. S. Fisher, Washington, D.C., for checking the key and examining specimens of the new species.

Although the leafhopper Colladonus clitellarius (Say) was found by Gilmer (1954) and Thornberry (1954) to be a vector of eastern X-disease virus of peach and cherry, little has previously been reported concerning the life-history or rearing of the insect. Gilmer (1954) stated that he did not know the host plant of the nymph and that collections of adults as early as June 3, 1953, and as late as October 22, 1951, suggested strongly that the insect may overwinter as an adult in New York State. Phillips (1951) found the species in sour-cherry orchards in the Niagara Peninsula of Ontario

The poplar sawfly, Trichiocampus viminalis Fall., is indigenous to Europe, where it is common and widespread, but is also prevalent in the north-eastern United States, Eastern Canada and British Columbia. For the past five or six years it has caused serious defoliation to Populus nigra and P. deltoides in the vicinity of Quebec City.