Vol. XI] COLE AND LOVETT—LIST OF OREGON DIPTERA 277 



459. Paragus tibialis (Fall.) 

 Forest Grove, VII and Hood River, V-16 (Cole). 



460. Chilosia aldrichi Hunter 



Mary's Peak, VI-14 (Lovett). Two male specimens, 

 placed here provisionally. The abdomen is not "everywhere 

 shining", but with subopaque cross band on hind margins of 

 second and third segments, not reaching lateral margins 

 and produced slightly forward in the center. Pile of disc 

 short golden, longer golden on the margins. Scattering 

 elongate bristle-like hairs on postalar callosities and on mar- 

 gin of scutellum. Otherwise fits description. 



461. Chilosia baroni Will. 

 Mary's Peak, V-9 (Currey). 



462. Chilosia borealis Coq. 

 Corvallis, IV-15. Doubtfully assigned here. Fits descrip- 

 tion except pile of eyes white. Length 8.5 to 9 mm. 



463. Chilosia chalybescens Will. 

 Corvallis ( Lovett ) . 



464. Chilosia chintimini Lovett, new species. 



Eyes pilose, arista nearly bare; color black throughout; 

 face, legs, halteres and pile black; wings dark smoky, veins 

 black. Length 1 1 mm. 



Male : Face black shining with fairly abundant, moder- 

 ately elongate, pile between tubercle and groove; indistinct, 

 short, golden pile along groove. Face not produced, but 

 slightly concave from antennas to prominent tubercle, deeply 

 concave between tubercle and prominent oral margin. 

 Cheeks black, subshining, with golden pile. Frontal triangle 

 strongly swollen, a deep median impression, pile coarse, 

 elongate, black; vertical triangle small, black; ocelli brown; 

 pile coarse, heavy, elongate, black. Antennae small and 

 brown; first two segments shining dark mahogany, third 

 rounded, thin, coffee color. Arista black, longer than 

 antennas, thickened and briefly pilose on basal third. Eyes 

 evenly and moderately elongate brown-pilose. 



December 14, 1921 



