The genus Linosta was described by Möschler (1881: 433) for the single species L. sinceralis Möschler from Surinam. There have been few subsequent published references to the genus, but in most collections it stands in the Schoenobiinae. Amsel (1956) surveyed the structural characters and noted that the genus did not fit very well into the Schoenobiinae or any other subfamily and that it would possibly require its own subfamily “Linosterinae”, but he left it in Schoenobiinae for the time being. In my opinion the group is sufficiently distinguished from the Schoenobiinae by the absence of proboscis, of maxillary palpus, of chaetosema, and of tubular 1st A of primary, as well as by the different tympanic and genital striucturc. The absence of the maxillary palpus would place the genus in Chrysauginae, but the joining of the tympanic bullae and the presence of a definite praecinctorium (new term for tablier of Guenée = Schürze of Lederer = Kielhäutchen of Amsel) rule this out. The group obviously belongs in the basal part of the crambine-pyraustine complex; the actual affinity appears to be to the Cybalomiinae (new subfamily, type genus Cybalomia Lederer, characters of Crambinae, but with chaetosema absent). The male genitalia agree well with those of Cybalomia and Stiphrometasia, especially in the close association of the base of the gnathos with a strap-like sclerite connecting with the costal articulation of the valve. Also the tympanic structure is closely similar to that of Stiphrometasia and furthermore to that of Thyridophora, which has a fovea and associated stalking of R5, and M1, just as in Linosta, and which also lacks the proboscis.

A list of all the known species of terrestrial Arthropods of the Labrador coast may prove convenient as a starting point for future investigations. Hence I have, besides enumerationg the species of ohter groups, revised the list of Lepidoptera—Mr. Sucdder kindly contributing the list of butterflies. For changes in the names of the Torticidæ I am indebted to Prof. C.H. Fernald's excellent catalogue of the Torticidæ of the United States.

In research on insect immunity, bacterial antigens were injected into Galleria mellonella L. larvae (Stephens, 1959). It was suspected that the quality and quantity of the blood, or hemolymph, might differ if the larvae were obtained from different sources. This note reports the effects of food and storage on the specific gravity and osmotic pressure of the blood, and of storage on the blood volume.

Elliott and Soule in ‘Caterpillars and their Moths’ say of the luna eggs—“Luna eggs are as purely white as its own white scales. We have had many eggs of luna, and never one which was not white.”

The baculovirus of Thymelicus lineola (Ochs.) has proved most effective as a microbial control agent of its host in numerous field trials, however, prior to its general use in an integrated control programme its possible deleterious effects on non-target organisms must be considered. Therefore the pathogenicity of this baculovirus to sheep and its cytopathogenicity to tissue cultures of lamb and calf testes were studied. Preliminary tests on 16 insect species were also carried out. No macro- or microscopic differences were detected between treated and control groups, suggesting that this baculovirus is quite specific and that its use as a microbial insecticide is feasible against T. lineola.

A change in the feeding behavior between small and large larvae of gypsy moth, Lymantria dispar (L.), is an important part of the insect’s biology. This paper describes how to build a lighting system with incandescent and fluorescent light in the laboratory to induce a change in feeding behavior similar to the change that occurs in the field. The change in feeding behavior was observed on artificial “tree stems” constructed from 5-cm ABS plastic pipe and fitted with felt and cardboard “bark flaps”. On the day before pupation began, 85% of the population migrated down the artificial tree stems to seek shelter under the bark flaps; only fourth-, fifth-, and sixth-instar larvae were observed exhibiting this behavior.

Tomotaenia was proposed in 1895 by O. F. Cook (3, p. 866) for the reception of a number of Nearctic species; Strigamia parviceps Wood, 1862 (6, p. 49) was cited as the genotype. In 1953 (4, p. 172) I considered Tomotaenia a junior synonym of Strigamia chiefly because reliable information on the questionable type species, parviceps, was neither to be gained from a study of the unavailable type specimen nor from a perusal of the literature and because of the fact that the original description of parviceps in some ways suggests the typical Strigamia habitus. In addition, Attems and others have placed parviceps in Scolioplanes [=Strigamia]. However, in a paper recenrlv published Chamberlin (2) shows that dignathodontid [linotaeniid of Chamberlin] centipedes agreeing in many particulars with Wood's descriptions of parviceps and especially epileptica (loc. cit) inhabit the northwestern United States in some abundance. Perhaps the most striking characteristics of these specimens are their possession of undivided ultimate pedal pretergites, broad ultimate pedal sternites, and coxopleural pores restricted to an area immediately bordering the afore-mentioned sternites. These features, then, might be taken as justifiable bases for separating forms congeneric with epileptica from those properly referable to Strigamia.

Severe local infestations of a cottony scale on peach have been reported from the Niagara district of Ontario since the early 1920's. The species has been commonly referred to the cottony peach scale, Pulvinaria amygdali Ckll., but Steinweden (1946) showed that amygdali was an entirely different species, leaving the identity of the local species on peach in doubt.

Laboratory studies of large Diptera, viz. Stomoxys calcitrans (L.) and Musca domestica (L.), necessitated the development of an aspirator that would be more efficient than the conventional one and which prevents associated debris from entering the operator's lungs. A suitable device was made by attaching a portable, lightweight vacuum cleaner to the mouth piece of the aspirator (Fig. 1). The size of the collecting jar can be varied to suit the size of the sample. This apparatus, which is easy to use (Fig. 2), and does not damage the insects being collected, saves considerable time. The aspirator may be useful for collecting from an assortment of dirty habitats (Wiens and Burgess 1972) as well as other scaly-winged insects. It may be adapted for use in the field by connecting it to a portable generator.

Mature larvae of Gonioctena leprieuri (Pic) and Gonioctena aegrota (Fabricius) are described and illustrated for the first time, based on specimens collected on Genista spp. (Fabaceae) in Spain. A key to known larvae of subgenus Spartoxena Motschulsky is provided. Diagnostic characters for the identification of species within this subgenus are shape of labrum, arrangement of microtrichia of epipharynx, shape of tarsal claws, and numbers of tubercles on abdominal segments. Notes on distributions and host plants are provided.

Perhaps never in the history of economic entomology has an undescribed species of insect appeared so suddenly and over such a wide area, and in such destructive numbers, as the “destructive green-pea louse,” the popular name I have given the insect herein described. It has occurred, during the past season, in Maryland, Delaware, Virginia, North Cerolina, Pennsylvania, New Jersey, New York (Long Island), Connecticut, Vermont, Maine, Ohio, and Canada (Ottawa).

Newly emerged adults of several species of parasites of the balsam gall midge were collected in the spring and fall. Biological notes on individual species are given.

Larvae of Wyeomyia smithii (Coquillett) were collected in Saskatchewan from pitcher-plants in swamps near Nipawin, Little Sandy Lake, and Waskesiu. Pupae and adults also were collected at Nipawin. No trace of W. smithii was found in pitcher-plants in a swamp near Duck Lake. Inconclusive evidence was obtained concerning the presence of W. smithii in a pitcher-plant swamp at Prince Albert.

Agrypon is distinguished from other genera and is discussed in relation to Trichonotus. A new species is described, and A. alaskensis Ashmead is synonymized with A. provancheri (Dalla Torre).

Biological studies were conducted on Ceutorhynchus trimaculatus Fabricius, a weevil imported under quarantine from Italy into the U.S.A. for evaluation of host specificity and potential for control of Carduus thistles. Females reared under day–night temperatures of 21°–10 °C and 9 h photophase oviposited an average of 211.7 eggs over 23.6 wk; the preoviposition period was 19.9 wk. Two oviposition peaks were observed each calendar year, the first from February to April and the second in November. Eggs hatched in 12.4 days with mean viability of 64.2%. There were three larval instars; the mean larval developmental period was 42 days, and the pupal stage averaged 15.5 days. Adult longevity for males was 43.9 wk and for females 43.5 wk.

Stegomyia mediovittata, n. sp.— Probosics black, unmarked, palpi black scaled, in the male the bases of the joints white scaled, in the female only the apices of the joints are white; inner side of first antennal joint white scaled, scales of occiput black, a median line of white ones, those on the sides yellow and white.