244 U. S. NATIONAL MUSEUM BULLETIN 216 



extreme apex whitish preceded by a faint infuscation; hind femur ful- 

 vous with a conspicuous subapical fuscous band, its extreme apex whit- 

 ish; front and middle tibiae of male white above, fulvous below; front 

 and middle tibiae of female fulvous, largely whitish above, with a 

 subbasal fuscous spot above; hind tibia with its apex broadly, its 

 under side, and a relatively narrow subbasal band fuscous, the rest 

 white; front tarsus of male whitish, of female pale fulvous, in both 

 sexes fulvous apically; hind tarsus fuscous, the basal 0.3 to 0.6 of 

 its basitarsus white; middle tarsus whitish to light fuscous, with a 

 faint repetition of the color pattern of the hind tarsus. The white 

 areas on the hind tibia and tarsus are more extensive in the male than 

 in the female. In the male the subbasal fuscous mark on the hind 

 tibia is often only a dorsal spot. Specimens from western North 

 America have the colors of the hind leg somewhat intermediate to the 

 European subspecies. 



A good figure of a female has been published by Cushman (1920, 

 Proc. U. S. Nat. Mus., vol. 58, p. 22). 



The cocoon is of open texture, short fusiform, round in cross sec- 

 tion, and of coarse, irregularly looped silk. Its color varies from whit- 

 ish to very pale brown. 



Specimens (23 d 71 , 1379): From Alberta (Edmonton, Lethbridge, and 

 Wabamun); Arizona (Bear Wallow in the Santa Catalina Mts., Flag- 

 staff, Huachuca Mts., Parker Creek and Pocket Creek in the Sierra 

 Ancha, Phoenix, and Workman Creek in the Sierra Ancha); British 

 Columbia (Creston and Robson); California (Fish Canyon in San 

 Gabriel Mts., Giant Forest in Sequoia National Park at 6,000 to 

 7,000 ft., Lake Forest at Lake Tahoe, Marin Co., and Menlo Park); 

 Colorado (Boulder, Chimney Gulch, Green Mt. Falls, and Ward); 

 Idaho (Lookout Mt. near Priest Lake, Moscow, Wallace, and Warren) ; 

 Iowa (Sioux City); Kansas (University of Kansas Natural History 

 Reserve in Douglas Co.); Manitoba (Aweme and Teulon); Maryland 

 (Beltsville, Glen Echo, Plummers Island, and Takoma Park) ; Massa- 

 chusetts (Holliston, Martha's Vineyard, Northampton, Petersham, 

 Princeton, South Hadley, Tyngsboro, and Wellesley) ; Michigan (Ann 

 Arbor, Cheboygan Co., and Douglas Lake); Minnesota (Lake Itasca); 

 Missouri (Cadet) ; New Hampshire (Franconia) ; New Mexico (Santa 

 Fe); New York (Artists Brook in Essex Co., Bear Mt., Cold Spring 

 Harbor, Frontenac Point on Cayuga Lake, Huguenot, Ithaca, McLean 

 Bogs Reserve in Tompkins Co., Millwood, Sea Cliff, and West Farms at 

 New York City); Nova Scotia (Kentville); Ohio (Hinckley); Ontario 

 (Barcroft in Hastings Co., Golden Lake, Honey Harbor, Sudbury, and 

 Timagami); Pennsylvania (Porter Creek at Carter Camp and Wila- 

 wana); Quebec (Aylmer, Laniel, Lanoraie, and Montreal); Rhode 

 Island (Westerly); Saskatchewan (Waskesiu); Texas; Utah (Logan 



