On June 1st, 1901, while on a mosquito hunt with Mr. J. Turner Brakeley, at Lahaway, we investigated the little pools around the head of a swamp spring. The water was very cold, and our object was, mainly, to ascertain wheter Aedes larvæ occured in such localities, where pitcher plants were in the vicinity.

In the course of our dipping I found a very odd little wriggler, altogether different from anything I had ever seen befor, and soon Mr. Brakeley found the same thing. We took only a few of them at that time, and from their minute size I assumed they must be very yound. I afterward sent a specimen to Dr. Howard, and he appeared as much at sea concerning its location as I was. It seemed to be a Culicid larva, without much doubt; but that was as far as we could get. The specimens were about an eight of an inch in length, light reddish in colour, and very hairy in appearance. The head was very broad, and from it the body taped gradually to the short obtuse anal siphon.

I was in error in referring these species as synonyms in 1894. The latter now stands as Tuerta sabulosa, Boisd., in Hampson's Cat. Lep. Phal., and is credited to New Mexico and California, besides other more southern localities. Very possibly the species may occur within the limits of the United States, but I have no specimens from our territory, all being from Mexico. Fenaria sevorsa, Grote is however, not the same insect, and the name must be restored from the synonymy. It has been subsequently described and well figured in the Biologia Centrali-Americana as Diamuna aedessa, Druce. This position, in the Noctuidæ, in undoubtedly correct, as the antennæ are shortly pectinated, without any trace of enlargement. The genus Diamuna is an Agaristid, and Druce's species is therefor improperly referred to it. The genus Fenaria, Grote must be subsituted for Diamuna, Druce (nec Walker).

While studying the specializations of the wing in the Papilionides, the general results of which are published in the Proc. Am. Philosophical Society, Jan., 1899, I found that Iphiclides, Ajax, Marcellus, etc., differed so strongly from the type of Turnus as to be generically separable. Ajax is, in fact, allied to species having a greenish or yellowish white ground colour, from South America and the Old World, while Turnus is evidently related to the black North American forms, Troilus, etc., with which it flies. This fact enables me to draw the probable conclusion that Glaucus represents the original colour of the species, which, so to speak, is turning into Turnus, The black ♀ Glaucus is the more conservative whereas the males are already, with very rare exceptions, of the yellow tape of Turnus. It is different with certain cases of so-called “melanism,” now spreading in Europe, as Eubyja var. Doubledayaria and Aglia vars. fere-nigra and melaina. Here the original ground colour is changing to black indifferently in both sexes.

In Dr. Dyar's “Preliminary Notes on the Larvæ of the Genus Arcta” (Jour. N.Y. Ent. Soc., March, 1900), some interesting remarks are made in reference to the larvæ of Arctia virgo, as to the stage in which the larvæ hibernate, and if they ever posses a dorsal stripe.

Through the kindness of the late Mr. T.G. Priddey, of Toronto, we received on the 10th April, 1901, three larvæ of A.virgo, collected by him on the 5th April. Writing under date of the 8th April to Dr. Fletcher, Mr. Priddey says: “I shall probably get more larvæ, but even now the bank under the grass where they hibernate is quite solid ice.” The three specimens only moulted once before maturity, viz., on the 26th April, 30th April, and 8th May, respectively; so these, at any rate, hibernated in the penultimate stage. Mr. Dwight Brainerd tells me that “ at Montreal, A. virgo generally hibernates in its second to las skin; that is, it sheds its skin twice in the spring before going into pupation.” He also states that he has found specimens in the fallin the penultimate stage. In the Annual Report of the Entomological Society of Ontario for 1869, on page 13, Dr. Fyles mentions that in the spring of 1891 he collected larvæ of this species at South Quebec, which moulted on the 4th May and again on the 20th May, the moths emerging on the 10th July.

The globose or rounded head, which is nevcr flat, oblong, and the difference in the antennæ, the antennæ in males being 10-jointed in the females 13-jointed, readiiy separate the subfamily from the Bethylinæ. The group comes quite close to the Dryininæ, but in the latter the head is transverse or subquadrate, never rounded, while the antennæ are 10-jointed in both sexes.

The genus Olixon, Cameron, originally described as a Braconid, belongs here, without much doubt, I think, judging from the description and the figure. Cameron say" “I am unable to point out the natural position of this curious genus. The elongated fore legs give it a look of a Bethylid, to which, indeed, it bears a general resemblance,; but I feel inclined to regard it as a true Braconid.” I have not seen a specimen of this genus, but Mr. Cameron's figure and description clearly show that it belongs here; the thickened fore femora are characteristic of the group.

Melanoplus Browinii, sp. nov.– General colour brownish fuscous. Head slightly prominent, witht the occiput elevated a little above the pronotum and with a black postcular stripe; interspace between the eyes no broader than the basal segment of the antennæ' fastigium moderately declivent and deeply sulcate except above, where it is biseriately punctate. Eyes large and somewhat prominent, distinctly longer than the infraocular portion of the genæ. Antennæ long, in the male as long or longer than the posterior femora. Pronotum equal in the anterior portion, but quite noticeably expanding on the metazona, truncate anteriorly, posteriorly obtuse angulate, the angle rounded; lateral lobes marked with a more or less interrupted black stripe which is continuous with the postocular stripe of the head. Median carina distinct only on the metazona, which is shorter than the prozona. Prosternal spine suberect, pyramidal, apically acuminate.

Culex atropalpus, new species.

♀. Black the halteres, apices of coxæ, and bases and under side of femora, except toward the apex, yellowish white; scales of palpi black, occiput covered with board, appressed whitish scales and with a patch of black ones near the middle of each side, the middle of the upper side covered with narrow yellowish scales, the upright forked scales yellow; scales of mesonotum golden yellow and with an median vitta of black ones; scales of abdomen purplish black, and with a narrow fascia of whitish ones at the bases of the segments, becoming much broader on the venter; scales of legs black, those at base and on under side of femora, except toward the apex, also to extreme apices of femora, both ends of tibiæ and of the tarsal joints, except the last two and apex of the third on the front and middle tarsi, white those on last joint of hind tarsi wholly white; claws of front and middle tarsi toothed, those of the hind ones simple; wings hyaline, lateral scales of the veins long and narrow, first submarginal cell slightly over twice as long as its petiole.

To this family belong the potter wasps. They differ from the papermaking wasps in being solitary and in constructing their nests of mud or clay, instead of macerated woody fibre or pulp. It is perhaps one of the largest, if not the largest, families in the Vespidea, and is well represented in all parts of the world by many genera and species.

The species superficially resemble the Vespidæ, but are quite distinct and are easily distinguished by the cleft or toothed claws, the claws never being simple or edentate as in the social wasps.

The family, like the Vespidæ, has reached its greatest development in warm or tropical countries.

1830. Proctotrypides, Family (partim), Leach. Edinb. Ency., IX., p. 145.

1830. Mutillidæ Family (partim), Leach. Opus cit., p. 147.

1839. Cenoptera, Tribe 6, Haliday. Opus cit.

1877. Cenoptera, Tribe 12, Forster. Ueber d. Syst. Werth d. Flugelg., p. 20.

The family was first defined by that astute British systematist, A.H. Haliday, who, as early as 1839, very correctly placed the family among the Fossores.

In 1893 the writer, in his Monograph of the North American Proctotrypidæ, followed the views of Prof. Westwood, and treated these insects as a subfamily in the Proctotrypidæ. Since that time, however, the extensive studies I have made into all families of the Hymenoptera have given me a much broader and more thorough knowledge of the families and their affinities, and I am now convinced that Haliday was right, that these insects are allied to the fossorial wasps, and have nothing to do with genuine Proctotrypoids; they are clearly alied to the Chrysididæ, through the Cleptinæ and Ameriginæ, and to the Sapygidæ, Tihiidæ, Cosilidæ, Thynnidæ, Myrmosidæ and Mutillidæ, –all parasitic families.

Hammaniella relativa, n. sp. – Face and dorsum subopaque. punctured, front opaque, the pleura more shining, longitudinal raised line on metapleura distinct, terminated abruptly, the mesothorax not appearing sharply truncate. The longitudinal medial lines on metanotum converging.

♂–Length 14 mm. Clypeus with a few punctures, somewhat shining, transversely impressed, anteriorly though not strongly. Face closely punctured, front opaque. Cheeks impunctate on the eye margin,otherwise with distinct, small, separated punctures, shining malar space punctured, opaque. Dorsulum almost opaque, the punctnres tolerably small, closely arranged. The scutellum more strongly punctured. Mesoplenra shining, with well separated, to smaller closer punctures. Metanotnm with converging, crude, longitudinal medial carinæ becoming obsolete before the apical margin, transverse carina strong. Metapleura separated from the metanotum by a distinct raised line, which stands out prominently, being margined on each side by a more or less distinct channel.

In connection with the study of the pollination of flowers by insects, for several years and in several journals I have published notes on the local Halictinæ, with descriptions of new species and the missing sexes of some which were only known in one sex. This paper is intended to bring my results together in a brief form.

The so-called genus Halictus of authors seems to be altogether too heterogenous. I restore Lasioglossum and propose two other new genera. I think that the several genera must stand or fall together. The venation shows that Agapostemon and Augochlora are more closely related to Halictus, as here limited, than are Lasioglossum, Evylaeus and Chloralictus.

Through the great kindness of a friend, I have received cocoons of Callosamia angulifera. These are stemless, and at once distinguishable from those of C. promethea. This character bears out the theory (see Can. Ent. for April, p. 94) that C.angulifera is the older, more generalized form in the genus. In my work on the Saturnians, June, 1896, I tried to show that the stemmed cocoons of Philosamia, Attacus and C. promethea were specializations and a more modern development, and gave probable reasons for acquirement of the habit of fixing the cocoon to the branches, so that it might not fall with the leaf in the autumn(1.c., pp. 15–16; also Plate 1.)

In going through the accessions to my collection, I have found several new species and new localities for some known forms. Most of these are included in this paper.

During 1900–01 I made some studies on the Bombide occurring in Colorado. This paper is an abstract of those studies, the main body of which is in an unpublished thesis deposited with the Secretary of the State Board of Agriculture at Ft. Collins, Colorado. The material used is in the collection at the State Agricultural College of Colorado, and in my own collection; also a few specimens at the U. S. Nat. Mus. Most of the collection passed through the hands of Mr. Wm. H. Ashmead, who corrected determinations and who very kindly looked over the table given below, not only making corrections in it, but adding some species I had not recognized.

The following specimens were collected at San Diego. California,during the year 1901 by Mr. G. W. Dunn, and are now in the collection of the Academy of Natural Sciences of Philadelphia. The terms used in the descriptions are those adopted by Comstock and Kellogg in their recent work, “Elements of Insect Anatomy”.

At the time of writing the paper on the red-winged Catocalæ* I thought I should very soon complete the list; but other matters have too long crowded out the work I had planned to do. I shall now give, however, my idea of how they should be arranged, with some notes on some of the species.