The genera of the same regions are included in the present paper as in a former one on Hypogymnidæ (Can. Ent., XXIX., 12). The palæarctic Lachneids of the old world have been admirably treated by Aurivillius (Iris, Dresden, vii., 121–185), and I am indebted to his work for valuable information, as well as to the works of Kirby and Hampson. In going over the literature I did not always confirm Kirby's types of the genera; but rather than disturb the matter again, I have accepted them as modified by Aurivillius; but with the restoration of Hübner's Tentamen names, I drop Gastropacha, as it is a synonym of Lasiocampa, being proposed in the same sense to include all the species of the family. Following Wallengren, I separate catax and rimicola from Eriogaster as defined by Aurivillius for convenience in the table, though I do not doubt that the venation is as variable as Aurivillius states (Iris, vii., 147). I cannot separate the new genus Paralebeda, Auriv., from Odonestis by anything that is stated.

I never had seen the imago of this species until the present year, and never saw the larva before 1896. Mr. Bruce tells me that it is a common species in parts of the Southern States, and that the eggs are laid in clusters, and the caterpillars are gregarious. In this paper I give simply my own observations. Early in August, 1896, I was asked what caterpillars were defoliating in Catalpa trees at Charleston, W. VA. It was said that some trees were completely stripped. I was unable to answer the question, as no caterpillar was shown to me. On my return home, I looked at my own Catalpa trees, and the first one that I happened on gave me a score or more of larva, one or two on a leaf, on the lower leaves of the tree. These larvae were three to four inches long, and evidently had passed their last moult. One young tree, perhaps ten feet in height, with a top six feet in diameter, had been completely stripped of leaves. I found a single caterpillar of Catalpœ on it, to shown what had done the mischief. I put the larvæ into a large flowerpot trvo-thirds filled with earth, and got, in a few days, some forty pupæ. Supposing these would go over to next year, I buried a few, and sent the rest to Mr. Bruce. In about two weeks he discovered that the imagoes had come out of his pupæ, and on examining mine the same result appeared.

Cuterebra emasculator, Fitch.—This species was supposed by Dr. Brauer to be the same as his C. scutellaris, but an examination of Fitch's type, now the property of the National Museum, discloses the fact that it is identical with C. fontinella, Clark. When describing the hairs of the thorax as yellowish, Dr. Fitch had evidently examined them in a very bright light, under which conditions they have a deceptive yellowish appearance, but in reality are altogether black.

On the 8th of June, 1897, I received from Mr. David Bruce, at Glenwood Springs, Colorado, about 30 eggs, laid by a typical female of P. Bairdii, confined over the food plant, Artemisia dracunculoides. These soon began to hatch, and I gave them fennel, on which they thrived.

Orthezia cheilanthi, n. sp.—Adult ♀ Length, 3.5 mm. Width, 3-3.5 mm. Length + ovisac, 6-8 mm. Width of Ovisac 3-4 mm. Body above covered with whtie secretion, which forms lateral and sub. dorsal longitudinal keels. A well-defined subdorsal furrow between the keels and the lateral margin formed by 3 or more rows of paltes; these are smaller than the projecting marginal plates, which are flattened; caudal plate and the 3 or 4 plates on each side of it very little longer than the lateral plates. The structure of the secretion is compact; in most of the other species of Orthezia it is fluffy.

Wishing to obtain a series of males of our common ground wasps, I paid a visit on the afternoon of October 21st to a larqe nest of Vespa occidentalis, Cresson, that I had noted some time previously, near my house. The day was dull and the wasps sluggish, but quite a number of males and perfect females were crawling about the entrance to the nest. Among the wasps were some specimens of a conspicuous yellow and black Hymenopteron unlike anything that I had seen before. I secured nine specimens, all males, and on my return home easily made out by the help of Cresson's Synopsis that the insects belonged to the genus Trigonalys. The next step was to turn to Harrington's paper in the Can. Ent., XXVIII., page 108, and compare my specimens with the description of the unique Trigonalys canadensis. unfortunately, all my specimens were males, while Harrington's type was a female. Consequently the description did not quite fit, but on the following day I took three females and satisfied myself that the species I had found was the genuine T. canadensis.

Larva.—Cylindrical, green, smooth, the setæ very fine and in-conspicuous, single, normal for the Noctuidæ.

The great damage which has been done to cabbage and other cruciferous plants by the harlequin cabbage bug (Murgantia histrionica) in its spread towards the north-east renders of interest any comments upon its natural checks. Prof. H. A. Morgan, of the Louisiana Agricultural Experiment Station at Baton Rouge, has reared in considerable numbers a Proctotrpid parasite from the eggs of this destructive insect, which was named by Mr. Ashmead Trissolcus murgantiœ. With commendable enterprise, professor Morgan has sent eggs of the cabbage bug to various Experiment Station Entomologists situated in localities which the Murgantia has more or less recently invaded, and to which it seems probable that the parasite has not he followed it. Professor Webster, of Ohio, has announced that he is trying to introduce this beneficial insect, and Professor Johnson, of Maryland, is making the same effort with Professor Morgan's help

Rhamphomyia mutabilis, Loew., has several times been observed preying upon Bibio pallipes, Say. I once saw hundreds of the former on a picket fence that had recently been whitewashed, and all appeared engaged in capturing the latter; at any rate hardly one could be found that was not engaged in sucking the life out of a victim. In one case the sexes were pairing while the female was lunching upon a recently captured Bibio.

Orthezia artemisiœ, n. sp.—♀. Immature form, Antennæ and legs piceous. Body covered with white secretion. Dorsum with two rows of dentiform tufts; the first four directed forwards; the remaining seven, decreasing in size caudad, directed backwards. Nine lateral tufts; the first, on a level with the second dorsal tufts, at right angles to the body; the others directed backwards, and about of equal length, except the last two, which are longer and narrower, the last being longest. Caudal tufts extending caudad of last lateral tufts.