276 ENTOMOLOGICAL NEWS. [June, 'lO 



The writer collected at Glen Alpine Springs during July and 

 August, 1907, and at Deer Park Springs from the middle of 

 May until the middle of August, 1908, and during July and 

 part of August, 1909. Glen Alpine Springs is about seven 

 miles west of the southern end of Lake Tahoe, in one of the 

 most picturesque regions of the Sierras. There are numerous 

 deep, mountain lakes in this region, and a number of high 

 peaks, including Mt. Tallac (9785 ft.), and Pyramid Peak 

 (10,020 ft). Deer Park Springs is located on Bear Creek, a 

 small tributary of the Truckee River, about six miles from the 

 outlet of the lake, and some twenty miles north of Glen Alpine. 

 Here the peaks are lower, the highest, Squaw Peak, having an 

 elevation of 8960 feet, and lakes are less numerous. The re- 

 gion between has the same general characteristics as the two 

 localities mentioned. 



The climatic conditions of this region are very favorable for 

 collecting. At the lower altitudes the winter snow is largely 

 melted by the middle of May, and there are many warm, sunny 

 days in May and June, with some cold weather bringing snow 

 or rain. During July and August the weather is warm and 

 clear, with an occasional thunderstorm. The nights, however, 

 are cold, and frost is not unusual, even in midsummer. The 

 first light snowfalls occur in September and October, and con- 

 tinued cold weather begins soon after. There is little collect- 

 ing in the higher regions before July, but when the snow is 

 once melted, the plants come out remarkably fast, and the 

 butterflies with them. 



The accompanying annotated list is certainly not complete, 

 but it is an attempt to bring into general knowledge the butter- 

 fly life of the region under consideration, and by so doing, to 

 help in working out the distribution of species. In making up 

 this list, I have used not only my own notes, but have had help 

 from a list of species collected about Glen Alpine by Mr. F. X. 

 Williams, of San Francisco, during a two weeks' visit to that 

 region in July, 1909, and from the data from some butterflies 

 taken also at Glen Alpine, for Mr. F. Grinnell, Jr., of Pasa- 

 dena, mostly in 1906 and 1907. I have, besides, noted the pub- 

 lished reports of Tahoe captures by other collectors, when these 



