472 ENTOMOLOGICAL NEWS [Dec., ’12 
were collected on this shrub, all showing a protective coloration, be- 
ing a grayish green, just like the foliage of the Artemisia. I found 
a chrysalis which I did not at the time particularly notice, but put 
it in a box, where after a few days a Satyrus, sp. emerged, like those 
which were so common flying in the vicinity. The chrysalis was at- 
tached to a twig at least two feet from the ground, and was the same 
color as the vegetation, grayish green. This chrysalis case is pre- 
served in my collection with the series of Satyrus from that region — 
Forpyce GRINNELL, JR., Pasadena, California. 
The Synonymy of an Economic Species of Sawfly (Hym.) 
HoprocaAMPA COOKEI (Clarke) —Dolerus cookei (Clarke). Can. Ent. 
vol. 38, 1906, p. 351. Hoplocampa (Hoplocampa) californica Roh. 
Techn. Ser. No. 20, Part 4, Bur. Ent. U. S. Dept. Agr. 1911, p. 143. 
The accumulation of additional material and additional study on this 
species has proven that the two names apply to the same insect. The 
biology of Clarke’s species also proves the identity. The type of 
Dolerus cookei is lost, having been destroyed in the San Francisco 
earthquake.—S. A. Rouwer, U. S. Nat. Mus., Washington, D. C. 
A Phycitid Moth Swarming at Light (Lepid.). 
In Boulder, Colorado, between 9 and Io on the night of Sept. 5, 
1912, I observed enormous numbers of a small Phycitid moth (Ho- 
moeosoma electellum Hulst) at the street lights, and even at the lights 
in the street cars. They were so abundant about the lights as to re- 
mind one of a heavy snow storm; during eight years at Boulder I 
have never seen anything like it. Mixed with them was a number of 
other species, which, however, hardly constituted 5 per cent. of the 
swarm. ‘These other species, so far as I collected them, were Euroa 
contagionis Smith, Euxoa sp., Loxostege sticticalis ,., Bandera cupi- 
dinella Hulst, Paltodora magnella Busck, Gelechia invariabilis Kear fott. 
All these species were very kindly named by Dr. Dyar and (the last two) 
by Mr. Busck. Dr. Dyar states that H. electellum occurs from New 
Jersey to California, but its life-history is unknown.—T. D. A. CocK- 
ERELL, 
The Occurrence of Cecidomyia foliora (Dipt.). 
During the past two years the writer has found that Cecidomyia 
foliora R. & H., which was described, in Volume XIX, pp. 340-352 of 
the Entomological News, from specimens bred from a single tree, 
has quite a wide distribution. At Amherst, Mass., I have frequently 
found its galls on the leaves of Quercus rubra and Q. coccinea grow- 
ing in the woods and during the summer of roto collected them at 
Black River Falls and City Point, Wisconsin on Q. rubra—C. W. 
Hooker, Mayaguez, Porto Rico. 
