120 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
ventral margin deeply emarginate. Ovipositor brown. Halteres 
yellow, knobs dark brown. Legs brown, coxae and basal portion of 
the femora yellow. Wings light smoky brown, vein and stigma slightly 
darker, the petiole between the diseal and second posterior cell very 
short, the median cubital cross-vein present. Length, c?, 9 mm.; 
9 , 10.5 mm. 
Two specimens: Capens, IMoosehead Lake, Maine, July 14, 15, 
1907. T^v-i^es in the New England collection of the Boston society of 
natural history. 
Oropeza venosa new species. 
PL 15, fig. 9. 
d^. — Front and rostrum yellow, vertex and occiput dark brown, 
palpi brown, antennae yellow, becoming fuscous beyond the first joint 
of the flagellum. Thorax yellowish with three broad, dark brown 
stripes, the dorsal strij)e ending at the suture, the lateral stripes ab- 
breviated anteriorly and interrupted at the suture; })leurae subtrans- 
lucent ; collar, scutellum, metanotum, a large spot on the center of the 
pleurae, smaller s])ots at the base of the halteres and between the coxae 
dark brown. The black bands of the abdomen are united along the 
dorsal line, leaving a large yellow spot on the side of each segment. 
Halteres long, yellow; knobs dark broAvn. Legs light yellow, the 
tarsi yellowisli white. Wings brownish hyaline; stigma and veins 
dark brown, the radial and cubital veins noticeably prominent, and 
the short median cubital cross-vein wanting. Genitalia brown, 
appendages black, style long, reaching the end of tlie jienultimate 
segment, reddish, base black; aj)pendages at the base of style acute, 
brown, tipped with black, margin deeply emarginate. Length, 10 
mm. 
Seven specimens: Hammond's Pond, near Brookline, IMassacliu- 
setts, June 18; Mt. Greylock, Massachusetts, June 15, 1906; Capens, 
Moosehead Lake, Maine, July 11, 1907; Hanover, New Hampshire, 
July 5, 1908; St. Johnsbury, Vermont, June 27, 1906 (C. W. John- 
son); Kearsarge Mt., 3270 ft., Bartlett, New Hampshire, July 2 
(A. P. ]Morse). Tyjie from ]Mt. Greylock, Massachusetts, in the New 
England collection of tlie Boston society of natural history. The 
specimen from St. Johnsbury, Vermont, has the cross-vein forming 
the diseal cell, wanting in the left wing. 
