yl PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 118 
Abdomen blackish brown; terminalia rather large and concolorous 
with remainder of abdomen. 
FEMALE.—Similar to male, except for terminalia. 
Lrenetu.—2.0-2.5 mm. 
Distrisution.—Alaska, Northwest Territories, Saskatchewan, 
Manitoba, Quebec; July-September. 
Genus Oldenbergiella Czerny 
Oldenbergiella Czerny, 1924, p. 69; 1927a, p. 22. 
This genus is likely to be confused only with Borborupsis Czerny, 
from which it can be distinguished by the absence of a bristle in the 
posterior portion of the mesopleuron. There is but one species known 
from North America. 
Oldenbergiella brumalis Czerny 
Oldenbergiella brumalis Czerny, 1924, p. 70; 1927a, p. 22. 
I have examined two females of this species, one a syntype (Type 
29350) from Berlin and the other from Dauphin, Manitoba, collected 
by Mrs. M. E. Hippisley in 1935 (month not known). Both speci- 
mens are in the U.S. National Museum. 
FremMaALe.—Fronto-orbital plates, ocellar triangle, vertex, and back 
of head black with grayish pollinosity; front brownish black, reddish 
along anterior margin; cheeks brownish yellow; antennae brownish 
black, aristae minutely pubescent; cheek-eye ratio 0.75. 
Thorax rather uniformly dark brown with faint gray pollinosity; 
dorsocentrals apparently 2+4, weaker anteriorly; scutellum with 
anterior pair of bristles much weaker than posterior pair; pleura bare 
except for propleural bristle, a few setae behind it on the mesopleuron, 
and a single sternopleural bristle with a few setae anterior to it. 
Wings hyaline; costal spines present, but hardly more than hairs; 
second longitudinal vein curving slightly forward toward the distal 
end. 
Legs dark brown; dorsal preapical bristles indistinct, except per- 
haps on hind tibiae. 
Abdomen dark brown to black; sixth tergite very narrow. 
Lrenetu.—2.0 mm. 
DistriBpuTion.—Manitoba. 
Genus Orbellia Rebineau-Desvoidy 
Leria Robineau-Desvoidy, 1830, p. 653 (part). 
Orbellia Robineau-Desvoidy, 1880, p. 656.—Czerny, 1924, p. 70; 1927a, p. 22; 
1937, p. 138.—Johannsen, 1941, p. 202. 
Crymobia Loew, 1859, p. 45; 1862b, p. 127. 
Anarostomoides Malloch, 1916, p. 15. 
Barbastoma Garrett, 1921, p. 128. 
