238 CALIFORNIA ACADEMY OF SCIENCES [Pkoc. 4th Sei. 



Dr. Back in his Monograph mentions a female from Wyoming 

 in the Williston Collection which has black femora, and the 

 last two abdominal segments black. "Were several more 

 specimens taken like the Wyoming one, and showed no varia- 

 tion, I should be inclined to believe them a new species." 



24. Agathomyia lutea Cole, new species 

 (Plate 18, fig. 20) 



Female : Length about 3.75 mm.. General body color dull yellow ; head 

 black, the frons and occiput thickly gray-pollinose ; bristles black; first two 

 antennal joints yellow, the third brown, with an apical, hair-like arista, about 

 as long as rest of antenna ; palpi and pn^boscis yellow ; face black dusted 

 with gray. 



Thorax dull yellow, with black bristles which are quite conspicuous ; last 

 three bristles in dorsocentral row much longer than others ; center row of 

 bristles running to a little beyond middle; the row on each side curving 

 out and down to the humeri. Just above the notapleural suture are five 

 strong bristles ; scutellum yellow ; halteres yellow. 



Abdomen yellow ; pile of first two segments longer and yellowish ; some 

 black pile on dorsum of second segment ; rest of pile on abdomen short and 

 black; tip of abdomen brownish yellow. 



Legs pale yellow, with short black hairs; wings hyaline and rather long 

 (Fig. 20). 



Holotype (No. 493), female, from Parkdale, Ore., Sept. 5, 

 1917 (F. R. Cole), in Museum of (California Academy of 

 Sciences. 



This species will run to fulva Johns, in Johnson's table (in 

 Psyche, Vol. XXIII, p. 27). We have a specimen of fulva 

 which is bright orange in color, occiput more velvety black, 

 thinly pruinose, and bristling of the thorax slightly different. 

 This specimen is only 2.5 mm. in length. 



25. Chilosia ferruginea Lovett, new species 



Eyes elongate black pilose; face but slightly concave, pro- 

 duced, tubercle reduced ; body and legs with long dense brown 

 pile. Length 11 mm. 



Male : Face black sub-shining with rather sparse almost microscopic 

 reddish brown (brown-ochre) pile; eye-margins with mixed brown and 

 black moderately elongate pile; brown pile extending down to the black, 

 sub-opaque cheeks and around occiput to vertex ; at base of eye a small 

 triangular reddish brown spot; frontal triangle swollen, with median 

 groove, sub-shining, black with elongate brown pile ; vertical triangle opaque 

 black, ocelli red, pile moderately sparse, elongate brown ; antennal prom- 



