438 KANSAS UNIVERSITY SCIENCE BULLETIN. 



Female : Same as male except pile of cheeks and coxae is 

 white, palpi shorter and not so thickly pilose ; front brownish 

 gray pollinose, pile black, tomentum golden yellow. Femora 

 somewhat lighter, and extreme tip of tibiae fuscous. Length, 

 6-7 mm. 



Three males from Washington and one female from California. 



Chrysopila bella, n. sp. 



Male : Head black ; occiput, frontal triangle, face and cheeks 

 dusted with bluish gray pollen ; pile sparse and white ; antennae 

 dark brown, the third joint lighter than the other two ; proboscis 

 yellowish, palpi brown, pile white ; ocellar tubercle prominent. 

 Thorax black ; mesonotum with grayish brown pollen, that of 

 the humeri and lateral margins gray, tomentum golden yellow ; 

 pleurae light gray pollinose, with light-colored pile above front 

 coxae and behind and below base of wings ; scutellum grayish 

 brown, covered with golden yellow tomentum ; metanotum 

 light gray pollinose ; halteres yellow, knobs brownish black. 

 Abdomen black ; first segment light gray pollinose, remaining 

 segments, in certain lights, grayish brown pollinose, in others, 

 opaque black, and in others still the segments appear to be the 

 former color on the apex and the latter on the base ; pile white, 

 tomentum golden yellow. Coxae blackish, apex with a yellow- 

 ish cast ; pollen light gray ; femora and tibiae light yellow ; tarsi 

 yellowish at base, black at apex. Wings hyaline, anterior 

 branch of third vein without stump. 



Female : Same as male except the antennae and palpi are 

 darker, the abdomen is uniformly gray pollinose ; knobs of hal- 

 teres yellow, trochanters are blackish, and bend of anterior 

 branch of the third vein is rectangular and with a stump. 

 Length, 5.75-6 mm. 



Two male specimens from California and one female from 

 Washington. 



Chrysopila flavibarbis, n. sp. 



Male and female : Head black, grayish pollinose, front of 

 female brownish pollinose ; pile of occiput, sides of face and of 

 palpi yellow ; antennae black. Thorax black, gray pollinose ; 

 mesonotum, except front, lateral and hind margins in female 

 velvety black ; sparsely covered with yellow tomentum, and on 

 sides having yellow pile ; pleurae bare ; scutellum of a brownish 



