278 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Thorax and scutellum shining black, scutellum with a hint 

 of mahogany brown. Pile throughout elongate, black, 

 coarser and shorter on pleura, spines everywhere absent. On 

 humeral angles with small, half-concealed, areas of whitish 

 pubescence. 



Abdomen opaque black on disc, subshining along margins, 

 pile moderately elongate, black, but with shorter, incon- 

 spicuous, brown pile in rows across disc of first three seg- 

 ments. 



Legs black with black pile, briefly short golden pilose on 

 under-surface of tibiae and tarsi. Wings dark, smoky 

 throughout; veins black. Tegulae light with light yellow 

 pile; halteres deep brownish black, a hint of gray on knob. 



Holotype, male, No. 838, Mus. Calif. Acad. Sci. A. L. 

 Lovett, collector, June 19, 1919. Para type, same data, in 

 collection of A. L. Lovett. 



Type locality, Mary's Peak, Oregon. 



Near ferruginea and lasvophthalma in size and length of 

 pile. The uniformly attractive black color readily sep- 

 arates it. 



465. Chilosia ferruginea Lovett 



Corvallis, IV-14 (Chamberlin) ; Mary's Peak, 111-30 

 (Lovett). 1919, Proc. Cal. Acad. Sci., Ser. 4, IX, p. 238. 



466. Chilosia hoodiana Bigot 

 Hood River, V-8 (Cole). 



467. Chilosia laevis Bigot 



Hood River, V-20 (Cole); Mary's Peak, VI-26; Leba- 

 non, V-18 (Lovett). 



468. Chilosia lasiophthalma Will. 

 Corvallis, IV (Lovett). 



469. Chilosia lugubris Will. 

 Hood River V and VI (Cole). 



