138 INSECUTOR INSCITI^ MENSTRUUS 



notum composed only of rather short stiff black hairs; pile on 

 the pleurae is black ; darker legs ; and black pile on abdomen. 

 In spite of the fact that the face is bare and the general 

 color is black C. Jioodiana appears to be its closest ally. How- 

 ever, there are a number of specific differences which serve 

 to separate them. C. Jioodiana ( 9 ) has the face broader and 

 somewhat produced downward, a shorter arista and costal 

 bristles (i. e., just beyond the base of costa) of moderate 

 length, noticeably shorter than length of discal cross-vein ; 

 whereas in catalina these bristles are unusually long, some being 

 longer than length of discal cross-vein. C. burkei is distin- 

 guished from it by its somewhat downward produced face, and 

 entirely dark legs, as well as its pilose face. 



Chilosia hiawatha, new species. 



Male. — Large, entirely black species with smoky wings ; eyes 

 hairy ; face bare ; scutellum with long black bristle-like hairs ; 

 ocellar and frontal triangles with fairly long black pile; ocellar 

 triangle with central, longitudinal, smooth broad groove ; an- 

 tennae and arista black; third joint small, nearly round in out- 

 line; arista long, but little shorter than hind metatarsus. Tho- 

 racic pile black, fairly long on mesonotum and long and coarse 

 on pleurae ; bristles on mesonotum near wings. Legs entirely 

 black with black pile. Second and third tergites subopaque, 

 broadly shining on anterior corners, elsewhere shining dark 

 bronzy green. Wings blackish at base, becoming less infuscated 

 apically ; squamae whitish with yellowish rim ; halteres whitish 

 with darkened knobs. Length 11 mm. ; wing 9.5 mm. 



Type.— Cat No. 25374, U. S. Nat. Mus., $ . 



Collected at Forest Hills, Massachusetts. Sent to writer by 

 Dr. J. Bequaert. 



This species keys out with nigrovittata, oriliaensis and borealis 

 as its closest associates. It is abundantly distinct from each of 

 these and may be distinguished at once by the black pile of 

 thorax and legs. 



Chilosia fiorella, new species. 



Male. — Less than medium size, greenish black in color ; 



