16 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Mt. Diablo, May 13, 1923, F. E. Blaisdell. Monterey Co. : Monterey, 

 Koebele; Paraiso Springs, May 31, 1916, Sleven; Bryson, Apr. 25, 

 1941, E. P. Van Duzee. Mariposa Co.: Wawona, Apr. 17, 1931, 

 feeding on cherry; Yosemite Valley, May 28, 1921. Fresno Co.: 

 Huntington Lake, May 8, 1931, Van Dyke; Havilah, May 8, 1931, 

 Van Dyke; Stevenson Creek, May 27, 1915, on Libocedrus; Black 

 Mt., July 5, 1919, F. E. Blaisdell. Tulare Co.: Atwood's Mill, June 

 29, 1913, Van Dyke; Visalia, April 1930, on poplar, F. T. Scott. San 

 Benito Co.: Waltham Creek, May 11, 1907, R. Hopping. Kern Co.: 

 Mt. Pinos, June 14, 1914, F. Grinnell. Ventura Co.: Mt. Pinos, 

 June 15, 1914, F. Grinnell. San Bernardino Co.: Forest Home, 

 June 14, 1928, Van Dyke; Lebec, alt. 4000 ft., May 15, 1928, J. O. 

 Martin. Los Angeles Co.: Tanbark Flat, June 23, 1950, F. X. 

 Williams. Riverside Co.: Palm Springs, Mar. 27, 1916, F. E. 

 Blaisdell. San Diego Co.: Mission Valley, Mar. 30, 1930, Ian Moore. 

 Imperial Co.: Laguna, June 3, 1924, F. E. Blaisdell. 



Remarks: In the LeConte collection are four specimens, the first 

 labelled "G. albidus Lee. Sacr.Rathv." and having, in addition, 

 a round gilt label indicating "California." The other three all have 

 gilt labels and two are also labelled "Santa Cruz." There are two 

 others in the same line labelled "Cal." that are probably not this 

 species. The type bearing the label is almost destitute of pubescence, 

 being badly rubbed. A drawing was made of this one, which presum- 

 ably was taken at Ft. Tejon, and with it is given the aedeagus of a 

 specimen from Lebec, which is located in Kern County near the type- 

 locality, Ft. Tejon. 



The grayish-white appearance of this species is responsible for its 

 name. It is not snowy white like G. squamulata Crotch, and the 

 coarse white hairs are pointed and not truncate as are the scales in 

 G. squamulata. 



Krauss has made two subspecies, one, G. diabola from Mt. Diablo, 

 Contra Costa County, which he differentiates by its less robust 

 form, more aeneous coloring and less densely punctate thorax. The 

 other, G. yosemitae, he differentiates by its less robust form, somewhat 

 less densely pubescent surface, with shorter and finer hairs, and more 

 shallowly emarginate eyes. There is a great variation in size in this 

 species, which, I believe, is not connected with specific localities. 

 The main character is to be found in the aedeagus. This is not unlike 

 that of G. squamulata and serves to distinguish G. albida from the 

 three following species, all more northern in range, that occur respec- 

 tively in northern California, Oregon, and Idaho. 



