I have read with interest the paper by Mr. Slingerland, Can. Ent., XXVII., p.p. 301–308, and as my name is occasionally mentioned, I trust to the courtesy of our Editor to allow me to reply.

All of the species described below were taken in Colorado. For most of the specimens I am indebted to the industry of my wife, who has done a large amount of work with the sweep net in Northern Colorado. No American species have yet been described as belonging to any of the genera mentioned, though some of the species described under Allotria may possibly be referable to some one of them. A number of species of Allotria in my collection are left until such time as the already described forms are more fully elucidated.

The genus Exomalopsis, Spin., was founded in 1851 on a couple of bees from Para, Brazil. Three years later, F. Smith described three additional species, also from Brazil. More recently, species have been described or recorded from Cuba, Jamaica, and Mexico, but none hitherto from the United States. One species, E. pulchella, Cr., has a remarkable range, being found in Cuba (Cresson), Jamaica (Fox), and Lower California (Fox). I myself have taken it in Jamaica.

Aulacaspis texensis, n.sp.— ♀ scale circular, 123 mm. diameter, very slightly convex, dull brownish-gray or sepia-brown, becoming transparent at the edges; sometimes entirely whitish. Exuviæ exposed, sepia-brown, not far from central, 1st skin to one side of 2nd, but wholly on it, with some white secretion extending over the centre of the 2nd.

When Mr. Fletcher was looking over my cases of moths during the short visit he paid me last summer, he particularly noticed a series of Hepialus argenteo-maculatus, and suggested that a short description of a variety that I have taken here would be interesting.

A large percentage of the half-tone reproductions from photographs, for illustrating Experiment Station Bulletins, are greatly reduced in value because of a lack of detail caused by heavy shadows, resulting from the use of opaque backgrounds near the objects photographed. To overcome this difficulty and to make such pictures of more value to specialists working in the fields of entomology, botany, and horticulture, a device, which is the outcome of combining several well-known principles, is here represented.

Prof. Roland Thaxter has sent me a specimen of what may be E. electilis, Morrison, and says: “The Eutolype is, as I suppose, electilis, and is subject to very great variation as to the depth and disposition of the darker shades and the clearness of the maculation, some being more or less obliterate and others on the plan of Coelodasys biguttatus, var. cinereofrons.” This is the first specimen I have had, and I can only say it represents a species distinct from Rolandi or depilis. Unfortunately, the abdomen is missing, and I cannot say if it is tufted. The black dash described by Morrison is incomplete. I saw the type in the Tepper collection, but had no opportunity of comparing it with the others. It reminded me, on a very cursory examination, of muralis, but as all the species have the peculiar facies of the group, this comparison goes for nothing.

With the exception of some undetermined gallflies and parasites, the following list of 86 species contains all the Hymenoptera collected (and bred) by the author, in the South-west, of which it has proved possible to get the names, except four mentioned in Can. Ent., 1892, p. 200. The gallflies and parasites above referred to will be recorded in some papers to be published in the future. The cottonwood, Blennocampa, mentioned in Can. Ent., 1893, P. 304, and in Zoe, iii., pp. 234–236, should also be included in the above exception.