NORTH AMERICAN GEOTRUPENAE — ^HOWDEN 215 



surface." No mention was made of larval food, nor was there any 

 description of the larvae or pupae. 



Rivers (1886, pp. 69-70) gave an extremely vague description of a 

 larva referred to as Odontaeus obesus. He stated that the larva was 

 chestnut in color with tufts of setae around each spiracle and had 

 prominent legs. He found the larva feeding on the rootlets of Um- 

 bellularia californica Nuttall. The above characteristics from his 

 vague description differ in most respects from the described characters 

 of the larvae of other species. That fact, coupled with the statement 

 "feeding on rootlets," which would seem to be a radical departure 

 from the known larval habits of any Bolboceras, makes me feel fairly 

 certain that Rivers was mistaken in his identification of the larva 

 before him. 



Careful and accurate descriptions of the biology and of the larva 

 are still needed. 



Specimens examined : 67 males, 82 females. 



CANADA 



BRITISH COLUMBIA: 12 males, 16 females. Agassiz, Creston, courtenay, 

 Duncan, Salmon Arm, Victoria; (2) April, (4) May, (6) June, (2) July, (3) 

 August, (1) September. 



UNITED STATES 



ARIZONA: 1 male, 2 females. McNary, White Mountains (Gila County); 

 (1) August, (1) September. 



CALIFORNIA: 29 males, 34 females. Berkeley, Brownsville, Dutch Flat 

 (Placer County), Kaweah, Lassen National Park, Lelands [Stanford?] Uni- 

 versity, Nevada County, Piedmont (Oakland), Pollock Pines (El Dorado 

 County), Sequoia National Park, Smith River (Del Norte County), Tulare 

 County; (1) February, (1) March, (5) April, (16) May, (27) June, (1) August. 



COLORADO: Included by Wallis. 



IDAHO: 1 male, 5 females. Moscow, Sandpoint; (1) April, (1) June, (1) August. 



NEVADA: 1 male, 1 female. Carson City; (1) June. 



NEW MEXICO: 3 males, 3 females. "Mescalero Apache Indian Reservation, 

 Rio Grand (near Taos)," Tajique; (2) June, (1) July, (2) August. 



OREGON: 14 males, 13 females. Corvallis, Dilley, Klamath, La Grande, 

 Medford, Portland, Wallowa Lake; (2) April, (6) May, (2) June, (2) July, 

 (1) August. 



UTAH: 1 male, 1 female. Salt Lake City, Warner Ranger Station (La Sal 

 Mountains); (1) June. 



WASHINGTON: 5 males, 6 females. Pullman, Seattle, Tenino; (9) May, 

 (1) July. 



WYOMING: 1 female. Cheyenne; (1) June. 



Bolboceras f alii (Wallis) 



Odontaeus f alii WaUis, 1928, p. 151. Type, male, Foxwarren, Manitoba, June 14, 

 1927, Wallis (Wallis). 



Bolboceras falli is a northern species, closely related to obesus 

 (LeConte). It is found during June, July, and August. 



327015—55 5 



