144 INSECUTOR INSCITI^ M^NSTRUUS 



Coquillett recorded (Proc. Wash. Acad. Sci., vol. 11, p. 428, 

 1900) this species as Chilosia pulchripes of Europe. It is 

 closely related, but the eye margins of kincaidia are broader; 

 the scutellum more thickly beset with bristles and the opaque 

 bands on the abdomen but little more than half as wide. The 

 most striking difference is the big curve in the third vein. 

 Pulchripes has this vein only gently bowed. 

 Cartosyrphus slossonae, new species. 



Shining greenish species. Eyes bare ; arista short pubescent ; 

 scutellum without bristles ; abdomen of male partly opaque ; 

 tibiae mostly yellow. 



Male. — Pile on ocellar and frontal triangles moderately long, 

 dark brownish. Frontal triangle punctate. Antennae yellowish 

 brown, third joint large, longer than broad, arista blackish, 

 microscopically pubescent, about one and one-fourth the length 

 of antenna. Face shining black, broadly silvery pollinose below 

 antennae, concave below, the tubercle protrudes as far forward 

 as antennal prominence ; epistoma not protruding ; lower margin 

 of face drops but little forward ; eye margins narrow, punctate 

 and with short pale pile. Mesonotum with pale pile, lateral 

 margins with rather dense, short, blackish hairs ; postalar calli 

 with a few long black hairs ; pleurae with mostly pale pile, 

 the rest dark brownish ; scutellum with pale pile, no black hairs 

 or bristles. Femora black, yellow on apices, clothed with black 

 and white pile ; tibiae yellow, each with an infuscate band about 

 middle; first and last tarsal joints darkened, the others yel- 

 lowish. Second and third abdominal segments opaque on pos- 

 terior margin, the third rather broadly subshining down the 

 middle, rest of abdomen shining metallic very dark greenish; 

 fourth and fifth segments with some black pile, the pile on rest 

 of abdomen short, pale dirty yellowish, longer along sides. 

 Wings with a yellowish tinge; stigma luteous, last section of 

 fourth vein very long. Squamae yellowish white, the margin 

 and the cilia pale yellowish; halteres pale yellowish. Length 

 10.5 mm. ; wing 9.5 mm. 



Female. — Head less subspherical than in the male. Front 

 shining black with short yellow pile. Antennae brownish or 



