52 General Notes. (January, 
is deemed a to publish a preliminary notice in order to secure 
priority. The Hymenoptera were represented by Bombus Kirbyellus 
Curtis, which occurred at Polaris Bay, May 31st and July 10th, anda 
new species, apparently of an ichneumon fly, Microgaster Halli,’ found 
in cocoons at Polaris Bay in June and again July 4th. 
Of Lepidoptera Laria Rossii, a moth closely allied to our Dasychira, 
was obtained in all stages from the egg to the imago. The eggs are 
spherical, smo th, and white, 0.06 inch long, and laid in a mass of about 
sixty, and, as in Orggia, upon the cocoon. The larva when half grown 
is broad and short, the body, including the hairs, measuring 0.60 inch in 
length and 0.30 in breadth. The body is densely covered with long, 
fine reddish-brown hairs projecting in all directions and concealing the 
head and end of the body. There are six large, short, dense, subconical 
tufts, the two anterior and two posterior ones black, the middle ones yel- 
lowish. Head and body black. The full-fed larva is a little longer, the 
head broad, and large, and black, as is the rest of the body, including all 
the feet. In this stage the dorsal tufts are all black, with the hinder- 
most one acute, and more prominent than the others; two segments in- 
tervene between the fifth and sixth pair. It is 1.60 inch long and 0.60 
inch wide. 
The cocoon is loose and thin, made of the long hairs of the caterpillar, 
held together by a thin, fine, silken web. There is an inner layer of 
hairs held in place by a very slight web. It is gray in color, and is an 
inch and a half long by one inch in diameter. 
The two specimens of the moth are male and female, well-preserved, 
and agree with Curtis’s description, except that the hind wings are uni- 
colorous, with no “ broad, blackish margin.” 
In the same bottle with the caterpillars of ZL. Rossii occurred a 
Tachina puparium of the usual form and 0.36 inch in length. 
Besides this species occurred Anarta Richardsoni (Curtis) and Glau- 
copteryx sabiniaria (Curtis) with its larva, already described by the 
writer in the Monograph of Phalenide of the United States. 
The following Mallophaga have been identified by Mr. S. E. Cassino: 
Physostomum mystax Burm., from Larus eburneus; Docophorus lari 
Fabr., from Larus glaucus; Goniodes colchici Denny, from Strepsilus 
interpres. 
A small, blackish Poduran, Jsotoma Besselsii,? occurred in abundance 
1 Microgaster Halli, n. sp. Medium sized, black, shining a little more than usual 
Antenne brown-black. Fore and middle pair of legs dark brown. Hind legs a little 
paler, with the basal third of the hind tibie and tarsi pale brown. Venation as 
triangular, as in some species. Length 0.12. Twelve specimens. Cocoons of the usual 
cylindrical shape; white. Length 0.17 inch. Two eeu ah this genus have been 
recorded by Schiddte from Greenland, but not described. ag to the memory 
of the m Captain Hall in command of the Polaris expeditio. 
2 Isotoma Besselsii, n. sp. Intermediate in form between 7. tricolor Pack., and I. 
nivalis Pack. Body long and slender, antenne but little longer than the head ; joints 
