416 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
usually pale yellow, rarely light ferruginous (occasionally entirely 
black) ; tcgulae pale yellow (sometimes with a shade of brown) , 
occasionally light ferruginous; a yellow spot of variable size on 
the meta-episternum, and the meta-postscutellum with a variable 
amount of pale olive, Mesoscutellum generally but slightly 
convex; meso-episternum moderately pointed. 
Abdomen. — Black; sides of basal tergum straw color. 
Legs. — Pale ferruginous, very rarely dull yellow ochre; ante- 
rior coxae beneath usually, trochanters, anterior tibiae usually 
before, anterior tarsi and the intermediate ones often, paler; the 
anterior femora usually with a narrow longitudinal yellowish 
band of varying distinctness above (quite often interrupted); 
the following parts black: the anterior coxae usually at base and 
often in greater part outside, a spot on the trochanters above some- 
times, apical half to two-thirds of the posterior tibiae, and the 
posterior tarsi except the apical segment. Arolia quite large. 
Wings. — Fore wings pale honey-yellow, sometimes hyaline; 
intercostal cell generally moderately translucent; stigma brown 
to dark brown; veins black, rarel}^ brown. Hind wings hyaline, 
apical portion as a rule faintly clouded. 
Length. — 10-13.5 mm. 
Redescribed from a large number of females. 
The male of this species is apparently very rare. 
# 
Habitat. — Amherst, North Adams, and Winchendon, Massa- 
chusetts (June and July) ; Bretton Woods, Kearsarge, and Dur- 
ham, New Hampshire (July) ; Capens, Orono, Eastport, and 
Moosehead, Maine (June to August inclusive); New Haven, 
Connecticut (June) ; Poughkeepsie, New York (June) ; New 
Jersey (Ashmead); Indiana; Algonquin, Illinois; Colorado. I 
have the following records from Canada: Nova Scotia (W. F. 
Kirby); Labrador; St. John, New Brunswick (July, Rohwer); 
Ottawa, Ontario (June, Harrington); Quebec (?) (Provancher) ; 
St. Martin's Falls, Albany River, Hudson Bay (W. F. Kirby). 
This species occurs comparatively far north ("Lat. 65°," W. F. 
Kirby), farther north, according to my records, than any other 
species. 
