The following comments upon Prof. Smith's paper in Can. Ent. for Nov., 1900, 333, have suggested themselves to me. The types of Acronycta there discussed are the specimens in Brit. Mus. Coll., and in several instances my determinations are now adopted by the author.

A. pallidicoma, Grote.

This name is cited without comment, except that the type is a small female (334). It would have been more to the point if this name had been identified with one of the “two series into which xyliniformis allows itself to be so prettily divided” (Sm. and Dyar, p. 149).

Some time ago, I read a very interesting article, by Dr. S. H. Scudder, in the Canadian Entomologist, on Cyphoderris monstrosa. The rarity of the insect, as set forth by Dr. Scudder's article, has led me to write the observations, of myself and others in this section, on an Orthopteran identified by Professor Aldrich and Professor Bruner as the above-named insect.

In June of 1899, while walking through a pasture near Moscow, at dusk one evening, I heard a great many short, intermittent chirps, similar to the song of Oecanthus fasciatus; but more subdued and ventriloquial, and with longer pauses between the measures. I supposed them to be the songs of crickets, but never before having heard songs like them, I decided to make an acquaintance with their authors.

During a trip to Paraguay to strudy the mosquito pest, Prof. Voges, the Director of the National Board of Health at Buenos Ayres, accidentally discovered a remedy for mosquito bites. He had a supply of all kinds of substances, among which was naphthalene, a chemical of no use whatever against the mosquito itself. A surprising result was produced on rubbing this chemical ou mosquito bites. Even when the part stung was greatly inflamed, it had the effect of neutralizing the insect-poison. By rubbing it on the spot immediately after a person has been bitten, the swelling that usually follows does not arise.

1. In his Coleopterological Notices, V., p. 594, Mr. Casey described a new genus of Aleocharini under tire name of Myrmobiota (crassicornis, Cas., n. sp.) as allied to Homœusa, Kr. The only specimen was captured at Iowa City (Iowa) by Mr. H. F. Wickham. Some time afterwards I received three specimens of an insect very like our Homœusa, under the name of Myrmobiota crassicornis, Cas., one directly form Mr. Wickham (captured at Iowa City, June 6, 1896), two through the kindness of Rev. P. J. Schmitt (captured by Wickham at Iowa City, bearing Wickham's number, 9561). After having compared this species attentively with our Homœusa acuminata, I could not doubt that it belonged to the same genus as the latter. I publisherd a note on this subject in the Tijdschrift voor Entomologie, XLI., 1898, p. 11, declaring Myrmobiota to be the same genus as Homœusa.

1. Field Observations on the Habits of the Species, by R. Weith.

Nannothemis bella, Uhl., is one of the smallest of dragon-flies. Of its life-history we have had no knowledge up to the present time. Until the publicetion of Williamson's Catalogue of the Dragon-flies of Indiana, last year, it was recorded only from our north-east Atlantic seaboard. I have frequently met with it in Elkhart and St. Joe Counties, the two northermost counties in Indiana; but, what has been most perplexing to me, only in a few very restricted areas, these areas not exceeding 50 yards in length by 25 yards in width from margin of lake. The only places I have met with it are at Simonton Lake, a distance of four and one-half miles from the City of Elkhart, Indiana, and Indiana and Baldwin Lakes, thirteen miles north-east of Elkhart, on the boundary line that divides Indiana from Michigan. In the latter place, on a smaller area than at Simonton Lake, the imago is very numerous. Frequent endeavors to find the species at other places where similar conditions prevail proved unsuccessful.

Chrysopheon, new genus.

General shrape and appearance of an Epeolus; labrum very long, rounded transversely, labial palpi 4-jointed, first joint longest, third and fourth subequal; maxillary palpi 2-jointed, second joint longest and tapering, maxillæ long, sickle-shaped and convoluted; scutellum with two short slightly-incurved spines, postscutellum produced medially into a short, sharp, upturned tooth; marginal cell rourded, not attaining the costa, second sub-marginal cell longer than first, narrowed above; receiving both recurrent nervures, claws bifid, inner tooth shortest, no pulvilli; abdomen convex, densely pubescent and banded, last segment of female bare, narrowed slightly and emarginate a very little at tip.

The maxillary palpi of Osmia (sens. lat.) are given by most authors as four-jointed. I have examined the maxillary palpi of sixteen species in this group, and find in every instance that these palpi are five-jointed. The first joint is usually small, sometimes globular in shape, and visible with a hand-lens only under very favorable conditions. The following species were examined: From the coll. of the State Agr'l College of Colorado—O. armaticeps; Cr.; Coloradensis, Cr.; dubia, Cr.; fulgida, Cr.; integra, Cr.; lignaria, Say, and mandibularis, Cr., all from Colorado.

During his extensive investigation of the mosquitoes of this country, Dr, L. O. Howard eucountered three apparently new forms, and in order that these may be referred to intelligently in his correspondence and otherwise, he has instructed the writer to name and chalacterize them in one of our entomological journals. The descriptions are therefore offered herewith:

Psorophora Howardii, new species.