62 PROCEEDINGS OP THE NATIONAL MUSEUM vol. 83 



and numerous bristles before apex on upper surface; inner forceps 

 bowed forward near base, short and united, triangular, posterior 

 surface near base convex, minutely punctate ; outer forceps tapering 

 rather evenly to an acute apex, shining brownish-black; fifth 

 sternite with a narrow deep incision, the lobes clothed with fine 

 black hairs. 



Legs black, tibiae obscurely reddish; middle tibia with three or 

 four bristles of unequal size on outer front side. Claws and pulvilli 

 elongate, the front ones obviously longer than apical tarsal segment. 



Wings gray-hyaline, small cross vein slightly infuscated; fourth 

 vein with a rectangular stumpless bend, curved inward for a short 

 distance beyond the angle thence straight in a diagonal direction 

 to the costa; first posterior cell narrowly open far before the wing 

 tip ; last section of fifth vein about one-fourth the length of preceding 

 section; third vein setulose to the small cross vein; costal spine not 

 developed; epaulets reddish. 



Female. — Hardly distinguishable from hirsuta^ but the sides of the 

 front are usually darker and more densely pollinose. Front at the 

 vertex, 0.4 of the head width (average of five, 0.4, 0.41, 0.4, 0.41, 

 0.38) ; the usual two proclinate orbitals present with one or two 

 reclinate bristles between these and the main frontal row ; abdomen 

 usually darker on the sides than in male, anal segment entirely red; 

 pulvilli short, otherwise similar to male. 



Length, 8 to 13 mm. 



Holotype. — Male, from Giant Forest, Calif., in Kansas University 

 Museum. 



Remarks. — Described from 22 males and 13 females. In the Kansas 

 University collection 8 males and 1 female, Giant Forest, Calif., July 

 28, 1929 (E. H. Beamer and Paul W. Oman) ; 1 male, Big Bear Lake, 

 Calif., July 26, 1932 (R. H. Beamer) ; 1 male and 1 female, Jacinto 

 Mountains, Calif., July 21, 1929 (R. H. Beamer) ; 1 male and 2 females, 

 Huachuca Mountains, Ariz., July 8, 1932 (R. H. Beamer) ; 2 males 

 and 5 females. Oak Creek Canyon, Ariz., 6,000 feet, July and August 

 (F. H. Snow) ; 2 males and 2 females, Magdalena Mountains, N.Mex., 

 August 1894 (Snow) ; 3 males, without locality, labeled " Col. Snow " 

 and one " Bailey Col., Aug. '90 "; 1 female, Oliver, British Columbia, 

 August 6, 1931 (L. D. Anderson). In National Museum 1 male, Bead 

 Lake, Newport, Wash. (M. C. Lane) . In J. Wilcox's collection 2 males, 

 Antelope Mountain, Grant County, Oreg., August 13, 1932 (D. K. 

 Frewing), and 1 female. Mount Rainier, Wash., White River Camp 

 (J. Wilcox). In Charles H. Martin's collection 1 male, Monrovia 

 Canyon, Calif., September 18, 1931 (C. H. Martin). 



The specimens studied vary considerably in size, but I have been 

 unable to find any tangible characters to separate additional forms. 

 The species has been recorded from New York by West under the 



