Bombus leucomelas, n. sp.— ♀. Black, with deep black pubescence, except that on anterior half of mesothorax, which is grayish, tipped with black, and on abdominal segments 3–6, which is pure white; clypeus arched, weakly and very sparsely punctured; labrum basally with two widely separated tubercles; joint 1 of flagellum equal to 2 and 3 together; wings deeply infuscated, iridescent; basal joint of hind tarsi not pointed at apex; pubescence of legs black. Length 21–22 mm.

I am hardly prepaled at present to accept Isodontia elegans, Smith, as a variety of I. apicalis, Smith. The differences between the two seem to be very constant, and their distribution appears to be somewhat different, elegans being more a southern and western form, while apicalis occurs chiefly in the central, eastern and northern States.

Eucorethra, Underwood*

Intermediate between Corethrella and Sayomyia, having the antennæ 14-jointed, as in the former, but the spaces between the verticels almost bare, as in the latter; differing from each in the much shorter second joint of the antennæ, which is only slightly longer than wide. Antennæ of male rather robust, submoniliform on the basal half, the first six joints only slightly longer than wide, the remaining joints increasing in length and decreasing in diameter toward the apex, the antepenult about half as long as the penult, verticels composed on numerous very long bristly hairs except on the last joint; antennæ of female nearly cylindrical, the joints gradually increasing in length to the apex, scarcely thickened at the insertion of the verticels, which consist of a few rather short bristly hairs; probosics about one and one-half times as long as height of head, palpi inserted near three-fourths of its length, 4-jointed; first tarsal joint much longer than the second; venation as in Culex.

The eggs of this species were received from the Rev. R. W. Anderson, of Wando, North Carolina. They hatched May 22, and the larvæ were matured by the middle of July. The larvæ are coloured to resemble a piece of wood or bark, and remain all day motionless, hidden on the ground. They are remarkably sluggish, can be handled free for a considerable time without making the slightest motion. They are general feeders.

Successful collections of Lepidoptera were made in British Columbia this season at Kaslo by myself, with the assistance of Mr. Caudell and Mr. Currie, and under the advice of Mr. J. W. Cockle. Over 20,300 specimens rewarded our efforts. Of these a large part are Noctuidæ, collected at sugar, showing some very fine series. Nearly 200 larvæ were observed. The material will be worked up at the U.S. National Museum. The National collection has been further enriched by the donation of 548 specimens from Messrs. Taylor, Bryant, Hanham, Bush and Harvey, whom I had the pleasure of meeting at the close of the collecting season.

The table which I here present of the genus Platylabus must be considered merely as a preliminary or working table of the species in the collection of the American Entomological Society,or in my own cabinet. The other species, known to me only by description, I have included for the sake of convenience, and have placed a star before their names. I cannot vouch for the correctness of these.

Segment 5 with a more or less evident bevelled or truncate space, false pygidium, which is rather sparsely short, bristly and fuscous, purplish or sericeous in certain lights; ovipositor (applied here to one of a pair of appendages often exserted one on each side of the sting) setiform, fimbriate, apex with several curved divergent spines; mandibles simple; maxillary palpi 3-jointed; scutel finely punctured, sub-bilobed; segments 1–4 with apical fasciæ of pale appressed pubescence

Gyrinidœ

1505, Gyrinus minutus, Fab., '80.

*1514 Gyrinus aquiris, Lec., '80.

Gyrinus sp., ' 80.

Hydrophilidœ

1542, Helophorus oblongus, Lec, '79, '80.

1543, Helophorus lacustris, Lec., '80.

1546, Helophorus linearis, Lec., '80.

1597, Hydrocharis obtusatus, Say, '80.

1614, Berosus striatus, Say, '80, '81.

*1622, Laccobius ellipticus, Lec., '80.

1653, Hydrobius fuscipes, Linn., '79, '81.

Cercyon, sp., '81.