130 PROCEEDIWaS OF THE NATIONAL MUSEUM. vol.49. 



black, with dense black pile, rarely a little paler; proboscis small, 

 labella fleshy. Thorax velvet black, without stripes, hair almost all 

 black, a tuft of yellow on the smaller calypter; hal teres black. 

 Abdomen velvet black above, shmmg on incisures when they are a 

 little extended, in side view mostly shining. Hind coxae with 

 condyles. Wings uniformly infuscated, rather dark. 



Female. — Black, head and thorax cinereous, the latter with black 

 stripes, abdomen shining; face bare, palpi black to red or even yellow; 

 halteres ycflow. 



Front with dense black pile; first antennal joint hardly longer than 

 the two following together, swollen, black pilose; second shghtly 

 larger than usual; third kidney-shaped, vertical diameter about one- 

 third more than that of first joint; beard yellow. Thorax with a 

 double median dark stripe and a poorly defmed one each side, pile 

 mostly black; halteres yellow. Abdomen shining black except first 



joint and apex, which ai'e opaque ; 



hah" of abdomen short, yellow. 



All the coxae with yellow hair. 



AVings miiformly infuscated, not 

 ] I) so dark as in male. 



Figs. 4-5.— Outer side of eight antenna of Length of male 6 mm. ; of 



S. KINCAIDI. 4, male; 5, FEM.VLE. X20. f^^^|^ ^,^_^ ^^^ 



Material examined — Males: 



9 from Kanaka Bay, San Juan Island, Wasliington, collected by 

 myself on foliage in the sun. May 31, 1906 (type-locality, type in 

 author's collection). 



2, Coupeville, Washington, June 23, 1907 (Kincaid). 



1, Skokomish River, Washmgton, June 22, 1912, B. EUiott (Km- 

 caid). 



1, Victoria, British Columbia, Aug. 6, 1903 (Kmcaid). 



1, Gabriola Island, British Columbia, May 30, 1908, B. Elliott 

 (Kmcaid). 



?1, Pacific Grove, California, Mar. 20, third joint of both antennae 

 gone (R. W. Doane). 



?1, Blue Mountahis, southeast Washington, July 15, 1896, a teneral 

 specimen with shghtly reddish legs (R. W. Doane). 



Females : 



4, Stickeen River Canyon, British Columbia (Wicldiam). 



1, Friday Harbor, San Juan Island, Washmgton, Juno 2, 1906 

 (J. M. A.). 



1, Olga, Orcas Island, Washington, Jul}^ 15 (Melander). 



3, Coupeville, Wasliington, June 23, 1907 (Kincaid). 



1, Olympia, Washington (Kincaid). 



2, xVshford, Washington, Dyar and Caudell (U.S.N.M.). 



