444 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
strongly translucent; stigma brownish, Imsal half pale; veins black 
or blackish, sometimes brown. Hind wings hyaline, apical half 
faintly clouded; veins brownish. 
Length. — 10-11.5 mm. 
Redescribed from four specimens. 
Variety. — Two females from New Hampshire (one from Jef- 
ferson, in the United States National Museum), represent a 
variety, differing principally from the general condition as follows: 
the cheeks from lower half to in greater part, lower orbit, inner 
orbit up to base of antennae, a spot on the h3'perclypeus, the 
anteriormost portion of the supra-antennal ridges, and a short 
angular line on the upper portion of the inner orbit, dark fer- 
ruginous (in one case the inner orbit up to the base of the antennae 
with a yellowish tinge) ; antennae beyond third segment rufescent 
beneath; tegulae brown, and the posterior margin of lobes of 
collar may be dark ferruginous ; from two to three basal terga on 
venter blackish; anterior coxae entirely black; a longitudinal 
black band on the basal half of the intermediate femora above and 
a broader one on the whole length of the posterior above (in one 
case the latter band widens out and takes in the whole of the 
apex) ; no black at apex of posterior tibiae. Arolia larger, being 
fairly large. 
This species is cataloged by Cresson, Dalla Torre, and Konow 
as a synonym of signata (Norton). Provancher himself called it 
signata in his Addit. Faun. Can. Hym., 1889 (p. 473), probabty 
on the authority of Cresson who compared a specimen of hasilaris 
with specimens which were determined as signata. My own 
studies lead me to regard hasilaris (Provancher), for the present at 
least, as a distinct species, which conclusion is in accord with the 
views of Mr. W. H. Harrington, a Canadian worker (Can. Ent., 
vol. 25, 1893, p. 61). This species may indeed approach signata 
which is apparently very variable, but I have had no difficulty 
thus far in separating the two. I might also add that hasilaris 
approaches tricolor in certain respects. 
Hahitat. — Amherst and Springfield, Massachusetts (June) ; 
Jefferson and Franconia, New Hampshire (June) ; Capens, 
Maine (July); Newport, New York (May); Quebec (?) (Provan- 
cher), and Ottawa, Ontario (Harrington), Canada. 
