442 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
or yellowish white; tegulae dull ferruginous, sometimes in greater 
part black. Mesoseutellum from rather flat to slightly convex; 
meso-episternum from rather blunt to slightly pointed. 
Abdomen. — Ferruginous; four basal terga except usually the 
posterior mesal portion of the fourth, three basal terga on the 
venter, and more or less of the two basal sterna, black; sides of 
basal tergum yellowish, or yellowish white. 
Legs. — Reddish ferruginous, paler toward the extremities; 
anterior tarsi, and anterior tibiae except above, with a yellowish 
cast; the following parts black: coxae, trochanters, basal half of 
anterior femora behind, intermediate femora except apical half 
before, posterior femora, posterior tibiae except one- to two- 
thirds of basal portion beneath, and the first segment of the 
posterior tarsi usually (blackish). Arolia fairly large. 
Wings. — ■ Fore wings fainth' pale honey-yellow; stigma brown, 
basal half paler; costal cell moderately to fairly strongly trans- 
lucent; veins black, or blackish. Hind wings hyaline, apical half 
faintly clouded; veins brownish, subcostal and basal portion of 
externo-medial usually blackish. 
Length. — 11-13 mm. 
Redescribed from two females including the type. 
Variety. — Two females from Machias, ]\Iaine, differ somewhat 
from the general condition and represent a variety. The basal 
segments of the antennae, cheeks, and orbits are black; the pos- 
terior dorsal margin of the lobes of the collar comparatively 
broadly, and the tegulae sometimes almost entirely, pale yellowj 
five basal terga of the abdomen and more of the venter may be 
black; coxae in part somewhat, and trochanters almost entirely, 
ferruginous (the ferruginous beyond the coxae may be paler and 
the intermediate tibiae maj^ have a j^ellowish cast before) ; the 
anterior and intermediate femora almost entirety, and the pos- 
terior tarsi except the apical segment, black. Mesoseutellum 
somewhat more convex; arolia smaller. 
Habitat. — Capens, and Machias, Maine (July) ; IMontana; New 
Jersey (Ashmead); New Hampshire, Colorado, and Canada 
(Cresson). 
