The distribution of the 16 genera and 376 species of the Dilleniaceous type is show in table D.

The differences observable in the percentages of this table and those obtained for the Solanum-Cassia type are doubtless to be accounted for in part by the small number of genera and species.

We are indebted to the Toronto Engraving Company, Limited, for the beautiful plate given in this month's issue. The invention of the trichromatic photographic process of illustration is undoubtedly one of the most important stimuli to scientific work of recent years. Especially is this the case in the study of insects, where it is frequently necessary to depict accurately very slight differences, both in form and colour, which could be described only with difficulty, or at greath length.

The common callipers ordinarily sold for measuring insects have always seemed to me too coarse for fine work. In the Hemiptera especially, where there is an abundace of small forms, they would certainly be useless for the delicate measurments of antennæ and limbs so frequently necessary, and for the proportional dimensions called for in the determination of species.

22. Atlanticus pachymerus, Burm.— The Shield-back Grasshopper.

Decticus pachmerus, Burm, Handb. der Ent., II., 1838, 712.

Thyreonotus pachymerus, Scudd., Bost. Journ. Nat. Hist., VII., 1862, 453.

Atlanticus pachymerus, Scudd., Can. Ent., XXVI., 1894. 179.

Since the apperarance of a paper in the May and June, 1903, numbers of the Canadian Entomologist, the writer has received for study either eggs or larvæ of several species of Apantesis, information as to the earlier stages of each of which was limited. The past three seasons in Canada have not been remarkable as to the abundance of material to collect, and Arctians, like many other kinds of moths, have been very scarce. Consequently not as many species have been received for study as had been hoped.

Everyone recognizes the destructive work of the Codling Moth, but everone does not know how to fight it. Much has been written about it, for the great loss occasioned by this one insect has compelled not only fruit-growers but also governments to investigate its habits and to determine practicable methods for its control. As a result of the labours of many scientific observers, its life-history is now fairly well known, and its control is now no longer a matter or mere chance.

Having prepared a case of insects for a Toronto Public School teacher, for her class-room, I thought it might be a stimulus to others to do likewise, if the details were given some publicity.

All of us wiht medium-sized or large collections have duplicates enough from which to select material for such a case without impoverishing our collections, and now that so many public schools have departments of manual training there should be no difficulty in getting the teachers in these departments to co-operate by supplying the necessary cases.

The forms treated of in this paper would naturally fall in the group for which Dr. J.B. Smith proposed the name Papaipema, and which Dr.Dyar in his catalogue accepted as a generic name, but as it was not so intended by the proposer, I do not know that it is necessary to accept it as such.

In 1902, while paying a brief visit to the White Mountains, from 6th to 10th August, I noticed that the plants of the Tall Meadow Rue(Thalictrum Cornuti, L). growing by the side of the road which runs from Fabyan's to the base of Mt. Washington, gave evidenc of having been attacked by some borer.

Several instances a disastrous and even fatal effects to valuable pearorchards from being attacked by the Psylla have come under my observation, as well as entirely satisfactory results from treating the trees.

The life-history and habits of injurious insects must be accurately determined before we can know just how to deal with them. A knowledge of the habits of such insects will also often enable the farmer to so manage his land crops that the insects are placed under unfavourable and even destructive conditions.

Arcita proxima. Guérin.—To obtain a feasible knowledge of the extent and direction of variability in this species, extensive material was procured by recrossing original broode and gain their inbred progenies.

Every year, in the United States and Canada, Thoudands of dollars worth of stored grain is ruined by granary insects, chiefly of three species. These are all well known, and much has been written concerning their habits and the methods by which they can be destroyed. Besides the three very injurious species, the Granary Weevil, the Rice Weevil and the Angoumois Grain Moth, which are responsible for the most of the damage done, there are a great many other kinds of insects which do serious harm to stored grain and various other edible products.

There are few things in nature quite so remarkable as the hibernation of insects and animals in a torpid condition. That life should still persist when animationis reduced so low, as must necessarily be the case, with these small creatures in close contact with frozen substances or even imbedded in solid ice, would be quite incredible, were there not so many instances which can be examined by those who wish to do so, every day throughout our long and cold winters.

On December 30th, 1904, I examined for spiders a small cave on the north bank of the Missouri River, three miles below Rochport, Mo. This cave is occupied by a small strea, which enters it by an opening some distance from the river, and leaves it in a narrow gorge cut back in the bluffs.

During the past winter Dr. L. O. Howard received specimens of a Cecidomyiid from Sir Daniel Morris, Director of the Imperial Department of Agriculture for the West Indies, with the statement that the larvæ live in the cambium layer of cotton plants. Up to the present time no representative of this family has been recorded as depredating upon cotton so far as I am awar, and at the request of Sir D. Morris the species is duly characterized herewith:

Porricondyla (Epidosis) gossypii, new species.

The good work on the Hymenopterous fauna of the Philippine Islands, begun by Father W. A. Stanton, S.J., is being contiuned by Father Robert E. Brown, S.J. and I have now the pleasure of describing below two new genera and twelve new species captured by him in the Observatory Garden at Manila.

Clothed with cinereous pubescence, which on the dorsulum, face, second, third, fourth and fifth abdominal segments is thinly mixed with black; posterior tibiæ and metatarsi, the later largelym covered with whitish hairs; metatarsus with a broad brush of brown hairs on the apical margin; length about 15 mm … … ignava.

14. Orchelumum vulgare, Harr. The Common Meadow Grasshopper.

Orchelimun vulgare, Harr., Ins. Inj. Veg., 1862, 162.

Xiphidium agile, Redtenb., Verh. zoo.bot.ges., Wien., 1891, 186 (in part).

Orchelimum agile, Scudd., Proc. Davenp. Acad. Nat. Sc., VIII., 1900, 73.

Over a year ago the writer received from Prof.T. D. A. Cockerell, for naming, a pair of Tipulids with aborted wings, taken on the summit of the Las Vegas Mts., in New Mexico, I suspected that they belonged to some normally long-winged form but repeated comparisons have failed to convince me that they belong to any of those represented in National Museum. They closely resemble Limnophila costata, Coq., which also inhabits high altitudes in the same region, but the joints of the antenn♀ are much shorter and broader, besides other differences.

Prosopis eulophi, sp. nov.—æ—Front coxæ simple; eyes long; cheeks narrow; metathorax with a distinct enclousre bordered by a raised line; dorsal segment i minutely puntured, without lateral white pubescent fasciæ; black; flagellum testaceous beneath; pale yellow marks as follows: lateral face marks about equally narrowed above and below, two lines on collar, tubercles, dot on tegulæ, bases of tibiæ, and base of hind metatarsus; wings hyaline; length 5 mm.