122 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Seven specimens: types, Clementon, New Jersey, d^, June 3, 
9 , Aug. 8, 1897, author's collection. Specimens have also been 
collected near Long Branch, New Jersey, June 12, (one specimen 
has discal cell in the right wing open); Westville, New Jersey, June 
6, 1897; Riverton, New Jersey, Aug. 11. A specimen from Auburn- 
dale, INIassachusetts, June 16, has discal cell of left wing open. 
Oropeza obscura new species. 
PI. 15, figs. 7, 10. 
cJ^, 9. — Head and thorax dark brown, opaque; palpi black, 
antennae fuscous, the two basal joints yellow; abdomen light brown 
somewhat shining, the black bands at the incisures not connected on 
the dorsal line. Genitalia yellowish, appendages blackish; style 
yelloAV, long and very slender, curved and often extending to the base 
of the penultimate segment, appendages at the base of style short and 
armed with small black spines, margin but slightly emarginate. Ovi- 
positor brown, eerie yellow. Halteres yellow, knobs brown. Legs 
brownish yellow. Wings smoky brown, the veins and stigma a slightly 
darker brown, the median cubital cross-vein wanting. Length, c^, 
8 mm.; $ , 10 mm. 
Thirty-four specimens: types, o', North Adams, Massachusetts, 
June 19, 1906; ? , Hammond's Pond, near Brookline, Massachusetts, 
June 18, 1908, in the New England collection, Boston society of 
natural history. -Other specimens : Auburndale, IMassachusetts, July 
11, 1905 (C. W. Johnson), Aug. S, 1907 (Owen Bryant), one with 
discal cell in left wing open; Squam Lake, New Hampshire, July 14, 
1907 (Dr. G. M. Allen); Norwich, Vermont, July 7, 1908; Capens, 
Moosehead Lake, Maine, July 17, 1907; Riverton, New Jersey, Aug. 
11, 1899. A specimen from North Adams, INIassachusetts (June 19) 
has the discal cell on the right wing pointed at the outer end (fig. 7). 
Oropeza obscura var. polita new variety. 
PI. 15, fig. 8. 
Distinguished from the typical form by having the entire dorsum 
highly polished. One specimen has the vein forming the anterior 
side of the discal wanting or indicated by a stub. Length, c?, 9 nnn.; 
9, 11 mm. 
