1948] 
Banks — Perlidee 
123 
Pronotum not quite twice as broad in front as long, 
anterior side plainly convex, anterior corners projecting 
a little, behind much narrower than in front, with a 
broad, pale median stripe, and each side including mar- 
gin, dark brown ; inner two-thirds of each side with short, 
irregular ridges ; rest of thorax black above, brown be- 
low ; legs rather evenly pale brownish, tarsi black ; abdo- 
men dull brown above and below, ninth ventrite with a 
rounded, swollen black spot each side ; ventral plate 
broad, and broadly rounded. 
Wings faintly tinted, veins not very dark, anal cell 
about twice as long above as broad at tip ; anal brace 
reaches from near base of cell across anal area, but no 
anal lobe here; cubito-anal cross-vein plainly its length 
beyond cell, not darkened ; subcosta ends some distance 
before cord, only a few costal cross-veins, and one be- 
yond cord ; radial sector forks once not far beyond cord ; 
in hind wings no extra cubital cross-veins ; abdomen fully 
as long as head and thorax. 
Length of body 12 mm. ; of fore wing 12 mm. 
From Bigbv, Nova Scotia, 28 May 1905 (Russell). 
Type M.C.Z. no. 27723. 
Atoperla consors sp. nov. 
Head dark brown ; only the antennal ridge opposite an- 
tennae and the basal part of the V-mark pale ; palpi brown ; 
antennae pale on basal part, soon becoming brown. Legs 
dull yellowish brown, tarsi darker ; thorax and abdomen 
dark brown, setae pale yellowish. 
Head only a little longer than broad, not as much longer 
as in ephyre; dark spots on ninth ventrite sometimes 
showing; wings fully as slender as in ephyre. 
Ventral plate of female shows a median broad V-line, 
and from each end a line at first curving in and then round- 
ing out, with outline of a square in the middle, otherwise 
very similar to A. ephyre. 
Length body 8 mm. ; of fore wing 10-11 mm. 
From Kingston, R. I., 23 June (Barlow) ; Pittsfield, 
N. H., 5 J uly (Bks) . Hitlers in the almost uniformly dark 
