10 16 General Notes. [December, 



pine, but in some rare cases tamarack. The eggs are of the usual 

 Pieris form and are laid in a series of a dozen or two in a straight 

 line on the leaves. The caterpillar eats all the leaves except the 

 fasicle at the end. Then all the tips turn upward and give to 

 the tree a chandelier-like appearance. The larva comes down 

 rom the tree on a thread, some fifty feet or more. In the middle 

 of July near Spokan, a number of old males were found ; higher 

 up in the valley they grew more numerous, in some places many 

 thousands being observed on one tree, presenting the appearance 

 of snow flakes in the distance. The larva was found in all stages 

 and the chrysalides were abundant. 



On July 24th females and fresh males abounded. They paired 

 at once and laid eggs the same day. The destruction seems to 

 have been great but localized, and Mr. S. Henshaw and Mr. H. 

 R. Stretch assisted Dr. Hagen in his observations. 



The species has long been known to differ from the rest of its 

 genus in its pine-feeding habits, and to be uncommonly numer- 

 ous, at times, in various parts of the Rocky mountain region ; 

 but we have never heard of such disastrous consequences as 

 those reported by Dr. Hagen. 



Entomology in Washington Territory.— Tn following Dr. 

 Hagen's remarks on the insects observed during the past summer 

 in Washington Territory, Mr. S. Henshaw mentioned, at the late 

 meeting ot the Entomological Society of Ontario, some points 

 of interest observed during the trip. Among the Hymenoptera, 

 bees and wasps were very abundant, the forms of Odyneri being 

 especially so ; very few Multillidse were found ; the agricultural 

 ant was observed in Montana. 



Lepidoptera Rhopalocera were extremely abundant in speci- 

 mens, but comparatively few species were observed. 



Papilio machaon form orcgonia occurred abundantly at Uma- 

 tilla, Or., June 24th, and was also taken at several points in W. 

 T., along the Yakima and Columbia rivers. Among the Hetero- 

 cera, very few Sphingidae occurred, five species of Agendas were 

 taken, and the most interesting Bombycid is a "basket-worm" 

 (Thyridopteryx sp. ?), found in Colville valley, W. T., and also in 

 Montana. Cossus was very abundant on cotton-wood, and a 

 number of interesting Notodontoid larvae were taken. Night 

 woik yielded very poor results. 



With the Diptera, Tabanida-, Asilidre, Hornby liid.x and Syrplu- 

 dae were most numerously represented. The occurrence of hris- 



md, Or. (c 





, from N. K. Geo. and III.), is of interest 

 species of Oinus"(Dejeani and Audouini?) were common 

 and, Or., and the last named occurred at one locality east 

 Cascade mountains in W. T. The distribution of Au- 

 ?) was confined to the mountain canons, while Dejeani was 

 common in such situations and along the river banks. 



