During the last three years considerable time has been devoted to the development of a technique for rearing larvae of the European corn borer, Pyrausta nubilalis Hubn., in quantity. This work nas necessary for the breeding of parasites working on the first instars of the borer, such as, Microgaster tibialis Nees which has been reared successfully during the last two years, Eulimneria crassifemur Thom., Macrocentrus gifuensis Ashm., and Apanteles thompsoni Lyle, work with the last three species being still in the experimental stage. Though large numbers of larvae can be produced by employing the methods outlined in this paper further experiments are in progress with a view to reducing the larval mortality, particularly in the second and third instars.

Male grayish; head densely grayish pollinose with reddish black reflections; frontal vitta opaque black, viewed from below with grayish pruinescence; antennae with second segment obscurely reddish apicad, third segment blackish: palpi blackish ; proboscis lightly pollinose. Thorax grayish pollinose, with black reflections; viewed from the side, the mesonotum with three brownish vittae. Abdomen more densely grayish pollinose, with dark reflections, each tergum has a broad subtriangular fuscous mark. Legs blackish, tibiae obscurely reddish, pulvilli tinged. Wings clear ; veins yellowish brown ; calyptrae tinged ; halteres yellow.

In an earlier volume (I) the writer presented observations on the bionomics of the parasites and inquilines from the galls of Disholcaspis mamma (Walsh) on a bur oak (Quercus macrocarpa) near Urbana, Illinois. Not less than fifteen species of Hymenoptera were then associated with that gall. In the last two years this gall and its several inhabitants were rare or lacking there, but the leaf galls of Neuroterus verrucarum O.S. and N. niger Gillette were abundant on the same tree. The larvae of the latter cynipids are heavily parasitized by a chalcid, Tetrastichus verrucarii Balduf of the family Tetrastichidae. Observations on the habits and stages of the parasite and its hosts are given below. These records incidentally extend the known hymenopterous fauna of the above tree by four or more species.

This dark green aphid feeds upon the roots or underpart of the crown of match brush, Gutierrezia longifolia. Usually the colonies of this tiny aphid are within two inches of the surface of the ground, but individuals have been collected to a depth of four inches.

Male.—Length 10 mm.; antenna 8 mm.

Head shining; vertex feebly convex ; front with sparse weak punctures Malar space scarcely one-fourth as long as basal width of mandible. Thorax shining; sparse weak punctures on dorsal third of pronotum, meso-scutum, scutellum, anterior half of mesopleura, mesosternum and metapleura; propodeum with distinct rather dense punctures except for polished mid-dorsal area where punctures are obsolete.

The genus Zaschisonyx Ashmead includes but a single nearctic species, Z. montana (Cresson), of which three forms are recognized in this paper. In all these forms the males are identical, as are also the saws of the females, so that only subspecific or varietal names can be given within the group.

Elongate, entire body and antennae ferruginous, legs a little paler; pubescence very short, yellowish gray, lustre dull from the density of the punctuation.

Head nearly as wide as the prothorax, densely punctate, feebly broadly impressed. Antennae slender, passing by one or two joints the hind angles of the thorax, 3rd joint slightly longer than the 2nd, these together subequal to the 4th.

While collecting during the spring and early summer of 1927 in the vicinity of Ottawa, Ontario, Canada, the writer secured large numbers of two species of Corixidae which on verification proved to be Arctocorixa bilineata Prov. and Arctocorixa trilineata Prov. To Mr. George Maheux, Provincial Entomologist for Quebec, Canada, the writer is indebted for his comparison of this material with the Provancher types in the Quebec Public Museum.

The preceding part under this general title was in 1927 (Can Ent., 59: 184-193). In the present instalment, I wish to describe a few novelites that have come to hand in recent years and to add records of certain rare species of Tipulidae. As is the case with numerous recent papers that I have published on the Nearctic crane-fly fauna, the present report is based chiefly on certain very interesting species that were collected in Michigan, Indiana, Tennessee and Florida by Professor J. Speed Rogers. One interesting species of Erioptera was included in material sent to me for determination by Professor Painter. The new species of Dicranomyia was collected in Nova Scotia by Mr. Gibson and in Massachusetts by Mr. Johnson. The very interesting new Tipula from Alaska was secured by Dr. Aldrich. I wish to thank all of these gentlemen for their kind and appreciated co-operation in making known the involved crane-fly fauna of North America.

Male. Length, 2.1 mm. Cephalothorax dusky orange, very lightly marked with radiating lines; viewed from above, rather broad, evenly rounded on the sides, narrowed towards the front, broadly rounded in front; viewed from the side gently rounded to the posterior eyes. Clypeus straight and slightly protruding. A tooth on the face of the chelicera.

Length 4.5-7 mm.: width 28-4 mm. Broadly oval; moderately convex; feebly shining; blackish, the dorsum with a bluish or greenish tint; body with erect brownish hairs. Head about one-half as wide as prothorax; genae moderately arcuate.

Dr. Herbert F. Schwarz has recently considered the relationship of Anthidium collectum Huard and A. angelarum Titus. After a study of the facts at hand, he says: “I think tliere can be little doubt that the insects represent one species to which the name collectum applies by virtue of priority.” From a review of the literature there seems to be no record of the nesting habits of this bee.

Several years ago Mr. H. C. Fall asked to see our Podabrus. A number were returned with MSS. names upon them, but Mr. Fall did not seem anxious to publish at that time and in fact did not publish until a year or two later.

No mention is made in the preface of having studied our material, although later under the several species are many references to specimens and localities in our collection.

Ball's treatment of the genus Philaenus (Proc. Ia. Acad. Sci., VI, pp. 223-226, 1898) contains a discussion of two species. Subsequently a third species described by Stearns (Ent. News, XXIX, 3, 1918) has been added and the genus reviewed by Stearns (Conn. St. Geol. Nat. Hist. Surv. Bul. 34, pt. IV, pp. 224-227, 1923). The present paper includes the description of a new Canadian species with a key to species and varieties based on material represented in the Canadian National Collection.

♂. Head black, shining; ocelli in a flattened triangle behind the eyebridges and separated from them by a width greater khan the diameter of an ocellus; eye-bridges contiguous and three facets wide. Face black, in width extending farther laterad than the middle of the scape. Palpi brownish, first segment short; second broadest, but little longer than wide with distinct sensory spot; third segment not twice as long as broad; fourth more slender, about three times as long as broad.

Black; parafacials and cheeks yelllow; frontal vitta obscure reddish on lower half. Length, 5 to 5.5 mm.

♂. ♀. Face and cheeks white, the occiput and parafrontals, greyish pollinose; frontal vitta with thin whitish pollen in some views. Palpi and antennae blackish. Thorax cinereous pollinose, with darker vittae from posterior view ; acrosticals in two rows; hair black; apical pair of scutellars as long as basal pair, cruciate. Legs black, thinly cinereous pollinose; tibiae sometimes brownish. Wings cinereous; veins brownish red: first vein setose on apical section. Abdomen thinly greyish pollinose. Outer genital forceps with two angular productions apically (fig. I). Female genitalia shining black.

The following description is presented for a new species of Campoplegidea of the sub-genus Vicreckiana, bred from larvae of the heinlock looper (Ellopia fiscellaria Gn.) by Mr. Karl Schedl, during the summer of 1928.

The collection from which this study was made was obtained through the courtesy of the Entomological Branch, Canadian Department of Agriculture, and was of particular interest in that it not only contiained excellent series of many of the described forms but also several undescribed species. Descriptions of the latter are submitted in the present paper together with notes on some of the others.

Length 6-7.2 mm.; width 3.6-4.2 mm. Broadly oval ; black, opaque above except as noted below, ventral surface and legs shining; pronotum and elytra with short, sparse, pale setae; venter with a few hairs. Head slightly more than half as wide as pronotum; genae not prominent.

The vestiture is of two kinds : The first consists of narrow flattened hair-like scales found in the striae, one before each puncture; these are closely appressed to the elytra. The second consists of a very dense covering of flat scales, broadly elliptical in shape, covering densely the elytra, the thorax, the under side of the body, the head except for the beak, the legs except for the under surface of the tarsi which are covered with black pubescence.