QQ U. S. NATIONAL MUSEUM BULLETIN 216 part 3 



Male : Black, Face with a white orbital mark that is broad below 

 and tapers dorsally to end at about midheight of frons ; clypeus except 

 marginally and mandible except marginally, white; palpi, often front 

 of scape, and tegula, white; coxae black or dark brown, the hind coxa 

 sometimes partly ferruginous; front and middle trochanters white, 

 dark brown above; hind trochanters blacldsh or partly fulvous; front 

 and middle legs bej^ond trochanters ferruginous, their tarsi brown 

 apically; hind femur varying from ferruginous with its apical 0.15 

 blackish to blackish with its basal 0.15 ferruginous; hind tibia dark 

 brown, its basal 0.18 white; hind tarsus blackish, its middle three 

 segments and often the apex of its first segment white, the base of 

 first segment narrowly light brown or whitish; apical 0.3 ± of first 

 tergite, all of tergites 2-4, and basal 0.4 ± of tergite 5 ferruginous; 

 tergite 7 with a median apical white spot. 



Female: Black. Flagellum dark brown, a little paler basally, 

 with a median white band (incomplete below) that covers about 5 

 segments; palpi brown; tegula dark brown; front and middle coxae 

 and trochanters fuscous, usually with ferruginous tinges; front and 

 middle legs beyond trochanters ferruginous, with some weak infusca- 

 tion; hind coxa, trochanters, and femur ferruginous, the trochanters 

 usually somewhat infuscate and apical 0.3 dz of the femur fuscous; 

 hind tibia dark brown, its basal 0.15 whitish; hind tarsus brown, its 

 first and last segments a little darker; first abdominal segment fer- 

 ruginous, its basal half infuscate; tergites 2, 3, and often part of 4 

 ferruginous, the rest black, the seventh with a median apical white 

 spot. 



Specimens (22cf,199): From Alberta (Edmonton and Drumheller) ; 

 British Columbia (Oliver and Vancouver Island); California (Dar- 

 danelle); Colorado (near Estes Park, and Greeley); Maine (Mount 

 Katahdin Summit at 5,215 ft.); Michigan (Chippewa Co. and Lucas); 

 Minnesota (Fridley sand dunes in Anoka Co.); New Hampshire 

 (Mount Madison) ; Quebec (Lac Mercier) ; South Dakota (Brookings) ; 

 Vermont (Plainfield and Rutland); and Washington (San Juan [Island], 

 Seattle, and Westport). 



Dates of capture are from late spring to late summer. Unusually 

 early and late dates are: May 25 at Seattle, Wash.; May 30 at Oliver, 

 B.C.; June 7 in Chippewa Co., Mich.; August 20 at Lucas, Mich.; 

 and August 27 at Edmonton, Alta. 



There is one reared series: 3d^, 19, from Clavellarius americanus, 

 Brookings, S. Dak., May 19, 20, and 26, 1891. 



This species is transcontinental in the Transition and Canadian 

 zones. 



