Leiparthrum albosetum n. sp. from Baja California is described. The three North American species in the genus are discussed and a key to distinguish them is presented.

Walker (1866) described Chauliodes disjunctus on the basis of a single female from Vancouver Island. Davis (1903) identified males and females from California as belonging to this species and noted that the male antennae were pilose and as long as the head and thorax combined. Supposing Davis' observation to have been based on a broken specimen, van der Weele (1910) referred C. disjunctus to Neohermes Banks, 1908, as a close ally and probable synonym of Neohermes californicus (Walker), a species in the male of which the antennae are as long as the body and are provided with segmental whorls of long hair.

In my paper on L. Arthemis and its alleged second brood, in Dec., 1881, I stated that some caterpillars of L. Ursula did go on to chrysalis and butterfly late in the year, in Ohio, though others of same lot went into their hibernacula when half grown; and that I had dissected one female Ursula which emerged in September last, and could discover no signs of eggs, or at any rate, there were no formed eggs. Also that I had sent a second female of same lot to Prof. Minot for examination. I now have his report, as follows: “There were certainly no ripe eggs in the abdomen, although there were a great many eggs in an immature condition.” I stated in the above mentioned paper, that the existence of the species Ursula did not depend on these late, or September butterflies; and the reason is, that the female coming so late, and with immature eggs, the season would either not allow the eggs to ripen, or if it did, and they were impregnated, which would be doubtful, it would not allow the larvæ to hatch and to reach the hibernating stage.

Forewings dentate, pulverulent, of a rather lighter grey than C.unijuga.... Median lines black, single, not very distinct. A whitish space before the large bisannulate concolorous reniform. sub-reniform likewise whitish, closed, joined to the t. p. line, the latter jagged but without very prominent discal teeth. making a deeper and narrower sinus altove vein than in C. unijuga. Subterminal upright. dentate, shade (preceding the blackish line) distinct.

The microsporidian spores infecting some Canadian populations of Tyria jacobaeae have been characterized for the first time at the ultrastructural level. Differences exist between this microsporidian and others described at the same level elsewhere.

Three species complexes (pallidiventris, chlorea, and geniculata) of Pristiphora Latreille are recognized from China. Two new species of Pristiphora from Nanking (Nanching), China, are described: P. sinensis n. sp., which is closely related to the Holarctic species P. geniculata (Hartig); and P. nankingensis n. sp., which belongs in the chlorea complex with P. fausta (Hartig), P. chlorea (Norton), and P. borneensis Forsius. P. formosana Rohwer and P. sauteri Rohwer from Taiwan (Formosa), together with P. zella Rohwer, P. pallidiventris (Fallén), and P. denudata Konow, belong in the pallidiventris complex. The lancets of the southeast Asian species of Pristiphora not illustrated by Benson (1963) are shown. Keys to adult females of species in the pallidiventris and chlorea complexes, and the separation of adult males and females of P. geniculata and P. sinensis n. sp., are presented. P. denudata is considered to be a valid species, not a subspecies of P. pallidiventris.

Random deviations from perfect symmetry in bilateral traits, fluctuating asymmetry, are thought to reflect developmental stability: the ability of an individual to buffer against genetic and (or) environmental stress during development (Palmer and Strobeck 1986). Fluctuating asymmetry is often regarded as an indicator of individual quality or fitness (Møller and Swaddle 1997); however, factors underlying fluctuating asymmetry are not well understood (Markow 1995). It has been suggested that heterozygosity, ploidy, and genomic coadaptation (hybridization) are genetic factors affecting the magnitude of fluctuating asymmetry (Palmer and Strobeck 1986; Markow 1995; Møller and Swaddle 1997). Insects having a haplodiploid sex-determining mechanism present opportunities to examine the relationship between ploidy and fluctuating asymmetry. In hymenopterans, females are diploid and males haploid. Thus the effects of ploidy can be investigated by contrasting males and females within a population (e.g., Clarke 1997). Diploid females, in which deleterious recessives reducing developmental stability could be masked, may be expected to have smaller asymmetry than haploid males (e.g., Brückner 1976; Smith et al. 1997). In this paper, we compare the level of fluctuating asymmetry in forewing venation of males to that of females in the carpenter bee Xylocopa appendiculata circumvolans Smith.

Harminius castaneus Fairmaire was described as a Eucnemidae, but all subsequent authors placed it among the Elateridae, usually as a valid genus and species near Athous. Neither the original description nor the illustration bear any resemblance to the species currently called castaneus. No original material could be found, therefore it is questionable as to what species Fairmaire described. To conserve nomenclatorial stability, application is being made to the International Commission on Zoological Nomenclature to set aside any previous type-species designation and to designate spiniger Candèze as the type-species of Harminius and Pseudocorymbites. Consequently, castaneus is considered as a species incertae dubia. An attempt is made to straighten out the usage of the names castaneus auct., spiniger Candèze, and florentinus Desbrochers. Previously castaneus auct has referred either to spiniger or florentinus (mostly to spiniger), whereas both are now recognized as valid species in the subgenus Harminius; gigas Reitter also belongs in the same subgenus. Pseudocorymbites Fiori is isogenotypic with Harminius and the subgenera Diacanthous Reitter and Megathous Reitter remain valid under Harminius, as in most catalogues.

Aulacorthum dorsatum new species is described from British Columbia. Its only known host plant is salal, Gaultheria shallon Pursh.

Drifting of honey-bees in a bee flight and rearing room quickly results in imbalances in hive populations. Orientation cues (coloured walls, coloured boards over the hive entrances, symbols on the walls, and objects located in the room) do not reduce drifting. Hive position in the room affects the direction of drifting, with one colony gathering-in a high proportion of the drifting bees.

A new species, Colias johanseni, is described. This species has male androconia similar to Colias meadii Edwards, 1871, and many palaearctic, neotropical, and ethiopian species, but the wing pattern is generally similar to that of Colias hecla Lefèbvre, 1836. Thus far, it has been found only on dry tundra at Bernard Harbour, N.W.T., Canada.

An extensive collection of adult Capnia licina Jewett was made in the Mount Baker area, Washington, USA, and from this the previously unknown female is described and illustrated, and the male redescribed and reillustrated.

The within crown distribution of three species of Pleroneura and their food source (active buds) was determined on white fir trees 5–30 ft tall. Over 90% of all active buds and 94% of all infested buds occur in the outer half of the crown. Over 50% of the total active and infested buds occur in the middle third of the crown. Percentage infestation within the crown increases from bottom to top. Percentage infestation per tree decreases as tree size increases.

In British Columbia the control of phytophagous mites, especially the European red mite, Panonychus ulmi (Koch), and the McDaniel spider mite, Tetranychus mcdanieli McG., is becoming increasingly difficult, mainly because of the mites' ability to develop resistance to most acaricides in a relatively short time (3). Because of this, methods of control other than strictly chemical are examined at every opportunity.

There is in the study of Entomology a fascination and delight that captivates the imagination, and renders the enthusiast liable to construct theories based upon such slender foundations that they fail to reach the dignity of assured facts. This, I think, may be said of much that has been written concerning the habits of this beetle. The record which I have thought proper to make relates to veritable facts, but whether in the particular instance referred to they are to be regarded as extraordinary and not of common occurrence, may be a problem yet to be solved. I trust that in offering this paper I may not be thought presumptuous in differing with so distinguished Entomologists as Drs. Harris and Fitch, yet as my observations do not bear out the conclusions which they have reached, and apprehending that the best interests of the science are served by that record or enquiry which relates to the discovery of facts, I make no apology to these fathers in the science for transcribing in relation to this subject views somewhat dissimilar to theirs.

The two chilopods described below were found in collections recently sent me for identification by the Federal-Horticultural Board and by Mr. R. D. Harwood of Cornell University. The types are in the author's collection.

Catocala Coelebs Gr.

The fore wings are black with a grayish white subterminal shade. A strongly marked variety of Badia with the fore wings brown, was mistaken for Coelebs by Mr. Strecker, and was the occasion of its reference to Badia. But a sight of many specimens leads me to believe that the true C. Coelebs, with black fore wings, grades into Badia, and is only to be regarded as a variety of it. But this could not have been predicated of the type. The two extremes are exceedingly distinct and different looking.

Exenterella Grote.

I propose this generic term for Exentera Gr.; preoccupied in Insecta. Now that we have Mr. Scudder's work on genera, there will be more certainty about generic names. I notice that Rhododipsa is not included in Mr. Scudder's list. In speaking of the omissions in my review of it, I did not intend that any idea of purposed favoritism should be conveyed by my words. I merely regretted that some authors should have been so fully and others so sparingly represented. Had the proof of my paper been sent to me, I think I should have changed the wording to a simple expression of this regret.