In the second paper of this series I have selected for discussion the nymphal stages of three species. The first of these is Paurocephala fremontiae F. D. Klyver, the adults of which are described in the preceding paper. The other species considered are Psylla pyricola Förster and P. mali Schdbg., both of which are of special interest because of their economic importance. The nymphal stages of neither species have been adequately figured nor described in detail.

The writer has been working on the food plants of the leaf-hoppers for many years and has found in the main the different species of the genus Platymetopius, as commonly recognized, are very closely confined to a single species of plant or to a closely related group. Before it was possible to prepare a list of the food plants in the group it was found necessary to describe a number of new species of which food plant and life history information was available. In working out the relationship of these species, two startling discoveries were made.

Andrena nubecula race tristicornis n. race. Flagellum entirely black. Lakeside, Que., Aug. 20, 1929 (J. W. Buckle). Also from Milwaukee, Wis., July 26, 1902 (Graenicher). The specimens are females. The Lakeside specimen has curiously aberrant venation.

The first list under this general title (Can. Ent. 61 : 231-236, 247-251: 1929) recorded from the Province of Quebec I species of Tanyderidae, 2 species each of Ptychopteridae and Trichoceridae, and 139 species of Tipulidae. Collections made in 1929 have added to this list 69 species of Tipulidae that are recorded at this time, such species being preceded by an asterisk (*). To this total of 208 speciest at least 100 species must be added before the record for Quebec can be considered as being approximately complete.

During the last few years' collecting in British Columbia, certain new species of Coleoptera have accumulated, until the writer now has a sufficient series of each to warrant their description.

In the latter part of July 1929 I found several unknown Pyralid larvae tying up the leaves of a shrub of Rhamnus frangula Linn. (indentification by Dr. M. O. Malte, Botanist in the Victoria Museum, Ottawa) in the vicinity of Fulford, Que. The web formed was an untidy sort of affair mixed with dead leaves and excrement, and each web contained only a single larva.

Two mistakes have become so prevalent among entomological writers that it would seem to justify the following observations. I. The use of the word “punctuation” instead of “punctation”. There are few North American writers who have not made this mistake. Notable exceptions are Dr. LeConte, possibly because he generally wrote his descriptions in Latin, and Dr. Horn, who generally used the words “punctate” or “punctured”.

In a recent paper (1931, Can. Ent., LXIII, 30 et seq.) I reviewed the bicolor group of the genus Ephemerella and in the present one I purpose dealing with the remainder of our eastern species and tabulating the results of breeding experiments, carried on during the past three years by Messrs. Walley, Milne and myself, as far as they relate to this genus.

Female. Dark brown in colour; 2.37 mm. long, 2.62 times as long as wide; allied to various Schedl.

Front flattened on a semicircular area below, rather finely moderately closely punctured, interspaces finely rugose, with very fine, inconspicuous hairs and with a distinctly but not strongly developed longitudinal carina which extends up to a level of the middle of the eyes; antennae concolourous, club 1.65 times as long as the funicle, 1.33 times as long as wide, first suture straight, second feebly arcuate, third strongly arcuate; eyes moderately coarsely granulate, the inner line emarginate, emargination wider than deep.

Length 8.4-9.3 mm.; width 4.3-4.8 mm. Moderately elongate, oval. Black; dorsum feebly shining and with a very feeble aeneous tint; two spots on the vertex, the anterior part of the head, and sides of elytra usually brown or brownish-yellow; antennae yellow, with four or five apical segments brown; palpi yellow, the apical segment of each brown; prosternum and legs dark brown.

To Mr F. Johansen I am indebted for a small collection of Corixidae obtained by dissecting the stomach of a 28 centimeter male specimen of the Arctic Grayling (Thymallus signifer Richards.) captured in a small tributary near the mouth of the Churchill River, Manitoba. Three species are represented, one of which is described below.

I have not found any records of this group of animals from Alaska or indeed from so far north. In the summer of 1930 I searched many localities throughout this region for these and similar animals of similar habitat. I did not find a single specimen of the insect genus Campodea or Japyx. I did not find the larger Symphyla at any time but a number of these small Pauropoda were found in five widely separated places. Two genera of the group were collected with three species in one and one in the other. Although there were some similarities between these four species and others collected to the southward, all were distinct.

For several years, I have had the pleasure of attending the annual meetings of the New Jersey Mosquito Extermination Association. These meetings are held at Atlantic City, usually about the middle of February. This year the 18th annual meeting was held on February 18, 19 and 20. One would think from the name of the organization that problems discussed at these annual meetings are concerned with mosquito control within the state of New Jersey.

Differs from typical gordius from the cast in its smaller size and more constrasted maculation, the costa and inner margin of forewing being shaded with deep smoky whilst the central portion of the wing is suffused with whitish shades, especially preceding the wavy subterminal dark line. Between this line and the outer margin of the wing the teriminal area is heavily suffused with deep smoky, in contradistinction to gordius borealis Clark in which this region is sprinkled with whitish, more as in the typical form. The dark intravenular streaks are reduced, much as in gordius oslari R. & J. from Colorado, but from this race the smaller size and the better defined transverse lines will distinguish it. Expanse 70 mm.

General ground color yellowish white to semihyaline marked with orange. Vertex with three white spots surrounded by thin orange bands. Pronotum with median U-shaped orange mark of varying thickness usually not touching either margin. Usual triangular spots back of each eye. Scutellum with tip orange, basal angles yellow more or less surrounded by orange. Clavi with well defined anchor-shaped spot in basal half and another spat just before tip.

Certain invaluable words and phrases as “apparently”, “seems to be”, and “it appears” have become to be an almost necessary part of the equipment of scientific invesigators and writers. The majority of the articles that come to hand are liberally sprinkled with such words, and perhaps not unnecessarily so.

Elongate, dull brown, covered densely with cinereous and brown scales. Anntennae brown at base, last five joints darker and broader. Thorax as long as broad, arcuate and dentate at sides; covered densely with scales, cinereous at sides, cinereous and brown on disk.