47 2 ENTOMOLOGICAL NEWS [Dec., *I2 



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. 

 FORDYCE GRINNELL, JR., Pasadena, California. 



The Synonymy of an Economic Species of Sawfly (Hym.) 



HOPLOCAMPA COOKEI (Clarke). Dolerus cookei (Clarke). Can. Ent. 

 vol. 38, 1906, p. 351. Hoplocampa (II o pi o camp a*) 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. ROHWER, U. S. Nat. Mus., Washington, D. C. 



A Phycitid Moth Swarming at Light (Lepid.). 



In Boulder, Colorado, between 9 and 10 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 Ihe 

 swarm. These other species, so far as I collected them, were Euxoa 

 contagionis Smith, Euxoa sp., Loxostege sticticalis L., Bandera cupi- 

 dinella Hulst, Paltodora magnella Busck, Gelechia invariabilis Kearfott. 

 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. 349-352 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 rnbra and Q. coccinea grow- 

 ing in the woods and during the summer of 1910 collected them at 

 Black River Falls and City Point, Wisconsin on Q. rubra. C. W. 

 HOOKER, Mayaguez, Porto Rico. 



