Among the parasites so far found to attack and destroy Aletia argillacea Hübn., aside from two not reared to the perfect state, are the following: Obtained from the egg, Trichogramma pretisa n. sp. from the larva, Tachina aletiæ n. sp., and Sarcophaga sarraceniæ Riley ; from the pupa, Pimpla conquisitor (Say), Cryptus nuncius Say, Chalcis ovata Say and, Cirrospilus esurus, n. sp.

4. Melitæ Minuta Edw.—Figured in Mead's Report on Butterflies of Colorado. Syn. Arachne Edw.

Chrysalis.–Length .54 inch ; cylindrical; head case short, narrow, rounded at vertices, the sides sloping; mesonotum rounded, not prominent, followed by a shallow depression; the abdomen large, and offering several rows of short conical tubercles; color yellow-white or buff, marked with black; top of head case black, the antennæ cases same; mesonotum with two crescent spots on each side; on the wing case a central patch and dark border ; the segments of abdomen edged with black on dorsal side; a ventral longitudinal stripe and one on either side; the tubercles black at summit, orange at base.

Every effort to render the present hotch-potch of Entomological names more correct and elegant is welcome to students of the Natural Sciences whose knowledge of the classic tongues is sufficient to render the ear sensitive to the grating jargon of many of our so-called Latin terms. I was therefore pleased to see Mr. Hulst's article in a late number of the Canadian Entomologist. He has raised one point that has been little noticed, but well deserves attention.

It is intended that in the forthcoming volume of the Canadian Entomologist each number shall contain at least one paper addressed especially to beginners in Entomology. Our esteemed coadjutor, Mr. Jas. Fletcher, of Ottawa, has kindly offered to assist in this undertaking, and we hope that other able hands will render all the aid they can.

Egg—Ovoidal, narrowing above, the base rounded, summit depressed ; the lower third smooth ; nearly a second third marked by irregularly hexagonal, very shallow cells; and the remainder by vertical ribs, slightly raised, terminating at the rim of summit ; color whitish-green. Duration of this stage 9 to 13 days.

Cecidomyia trifolii, Canandian Entomologist, vol. xi., p. 44. 1879.

I am indebted to Dr. Hagen, of Cambridge, Mass., for the information that the name which I had selected for the clover-seed fly was preoccupied by Franz Loew, in Verhandl. Zool. Bot. Gesell., Wien, 1874, vol. xxiv., where he describes (p. 142) the male and female, larva, pupa and gall of a species occurring in a folded leaf of Trifolium pratense, and figures (pl. 2, f. 4) the deformation of the plant.

To the Members of the Entomological Society of Ontario :

Gentlemen,–Again it is my privilege as your retiring President to address you, to draw your attention to Entomological subjects, and more especially to the operations of the insect world about you and to record the progress or decline of those noiseless disturbers of our peace–injurious insects.

This is, without doubt, the most beautiful of our leaf-eating beetles. It is nearly an inch in length (fig. 9), of a broad oval form, with the wing cases of a rich yellow color, with a pale metallic lustre, while the top of the head and thorax gleams like burnished gold of a briliant reddish cast. The nnder surface has a polished coppery hue, and is thickly covered with whitish wool ; this latter characteristic having suggested its specific name lanigera (wool-bearer).

Angynnis Hippolyta.

Male.—Expands 2 inches.

Upper side fulvous, obscured by brown at bases of wings ; the discal area of each wing lighter than elsewhere; the black markings rather heavy; the marginal lines more or less confluent; the silver spots of second row indicated on upper side by oblong spots of a pale color.

The Insect Powders of commerce are the powdered flowers of different species of Pyrethrum. Those of Pyrethrum carneum and roseum were introduced some thirty years ago under the name of Persian Insect Powder, and subsequently those of Pyrethrum cinerariæ folium, a native of Dalmatia, Austria, as Dalmatian Insect Powder.

Although Cossus centerensis has only recently been discovered, it must have existed for many years in the vicinity of Center, N. Y., its present home. More than twelve years ago, while riding in a Central R. R. coach, I noticed certain species of Poplar, the central shoot of which had perished from causes then unknown; later, while on an Entomological tour near the same place, I found a group of the Populus tremuloides which were similarly affected, as were also many other trees of the same species in the vicinity.

It is our desire in the present article to call attention to two pretty well established laws of nomenclature, that with a few seconding words on our part, the laws may, “to those whom it may concern,” preach the importance and necessity of their being observed and obeyed.

Proctotrupes crenulatus.

♀.—Length of body 10 m. m. Red ; eyes, ocelli, antennæ (except basal joint), sides and apical margin of scutellum, the post-scutellum, metathorax, extreme base of abdomen and tip of ovipositor, black ; mesopleura, disk of mesopectus and spiracles of metathorax, piceous ; terminal joints of the tarsi fuscous.

It has so happened that within a few years past Professors Zeller and Frey in Europe, and I in the U. S., have at about the same time described a large nunber of American species of Tineina, and as might have been expected under these circumstances, it has occasionally happened that the same species has been twice described under different names.

Prodenia phytolaccæ (Abbot & Smith, Vol. 2, 193, Pl. 97).

This species is sent me by Mr. Belfrage from Texas, under the number 706 (pink label). The insect has naked eyes, pellucid white and iridescent secondaries, the veins and external margin slightly-soiled. It cannot be referred to Xylomiges, the type of which genus, the European conspicillaris, has hairy eyes, as have all the species referred by me to Xylomiges in my “Check List” and elsewhere.

L. Murtfeldtella Cham.

Miss Murtfeldt favors me with the following notes upon the larva of this species : “It feeds in the flowers of the Œnotheras both wild and cultivated, and is especially destructive to Œ. Missouriensis, which is now extensively cultivated.

The larvæ of Arthemis feed on the leaves of willow, aspen, bassyood, and, it is said, on thorn. In the Catskills, the eggs are laid the last days of July or early in August, on young trees, and but one egg upon one leaf. This is placed near the tip, and the newly hatched larva eats away the leaf on both sides of the midrib.

L. argentinotella Clem.

This species varies in color from very pale golden yellow to reddish saffron, and in size from about one-fourth of an inch to about one-third. Likewise as to the size and distinctness of the marginal streaks on the fore wings and as to the dark margins of these streaks.