250 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Sei, 



pruinose areas midway between lateral margin and median Hne and not 

 reaching any margin ; pile more luxuriant but similar to male, orange more 

 conspicuous on disc; black on fifth segment mixed with brown, incon- 

 spicuous. Tarsi darker than male ; veins of wings black. 



Holotype (No. 507), male, and allotype (No. 508), female, 

 in Museum of the California Academy of Sciences, S , col- 

 lected at Mary's Peak, Ore., May 14, 1916, Lovett, collector; 

 9 Alsea, Ore., April 15, 1916. 



Two females and five males, April and May. Subalpine. A 

 large showy orange and black form occurring about fallen 

 decaying logs. It flies swiftly, and is a very early form. 



Similar to kincaidi (fig. 26) ; distinguishing character is the 

 legs, particularly the tarsi. See Fig. 24. 



39. Criorhina quadriboscis Lovett, new species 

 (Plate 18, figs. 25, 2Sa, and pi. 19, fig. 25b) 



Female : Length 12 mm. Face unusually produced, heavy, blunt, square 

 at proboscis; lower eye margins but little more than one-half distance to 

 tip ; slightly concave below antennae ; tubercle reduced ; concave from 

 tubercle to margin; golden pollinose with elongate golden pile along eye 

 margins and a tuft at oral margin; front and vertex dark brown with 

 golden pollen and dark brown pile ; a deep median suture about ocelli ex- 

 tending down to antennal prominence ; cheeks shining black, bare, below 

 and along occiput golden pruinose with light yellow pile ; antennae small, 

 dark brown ; first two segments equal ; third broad, rounded, flattened, 

 lighter at base. Arista dark brown. 



Thorax black, golden pruinose, on anterior half with light pile, a shining 

 black transverse band dorsally with black pile ; post-alar callosities with 

 elongate white pile ; scutellum black with conspicuously elongate white pile. 



Abdomen black, sub-opaque on first two segments ; light yellow pilose, 

 thin and short on disc ; third segment shining black, orange pilose on disc, 

 outer angles black pilose ; fourth segment shining black, conspicuously 

 elongate orange pilose ; on anterior lateral angles, but not reaching the 

 lateral margins, are two pruinose crescentic spots ; the lateral margins with 

 elongate whitish pile ; fifth segment sihining black, elongate black pilose. 



Legs brown ; femora dark, lighter proximally and apically, tibiae similar, 

 but lighter throughout; tarsi dark at tip. Pile on front and middle femur 

 light at base, black at tip ; on hind femur mostly coarse black with scatter- 

 ing lighter hairs, tibiae and tarsi with short golden pile ; wings appear twice 

 length of abdomen, smoky, veins dark brown throughout; stigma yellow. 



Holotype (No. 509), female, in Museum of the California 

 Academy of Sciences, collected at Mt. Jefferson, Oregon, April 

 16, by Hartley. 



Characterized by projecting blunt proboscis, and elongate, 

 black, light and golden pile. 



