74 
Psyche 
[March 
I. fumosa, herewith described, and a clear winged species in 
which the radial sector is forked beyond the cross-veins ; all 
are from the northwestern parts of United States and 
western Canada. 
Isocapnia fumosa sp. nov. 
Figure 3 
Body black, posterior parts of meso and metanotum 
polished, legs, antennae, and setae also uniformly black. 
Both wings fumose, almost black on front part, the cells 
behind are paler in the middle, veins black. Body with only 
minute hairs, those on legs not half as long as in 7. crinita. 
Pronotum a little broader than long, scarcely at all 
narrowed behind. 
In fore wings six to nine costal cross-veins, oblique vein 
arising about its length beyond the subcosta ; all apical veins 
unforked; in hind wings several (four to five) costal cross- 
veins, lower branch of medius forked; anal area reaches 
about two thirds way to tip. 
The last dorsal segment of the abdomen projects at a 
slight angle in the middle. The ventral plate is broad and 
broadly rounded, each side of its median tip a ridge runs 
obliquely over the next segment. 
Length of fore wing 16 mm. 
From Oregon National Forest, Herman, Oregon, 18 April, 
1920, and Junction City, Oregon, 7 April, 1919 (both A. C. 
Burrill) . Type M.C.Z. no. 22661. 
Nemocapnia gen. nov. 
Body and wings slender, radius not bent at origin of radial 
sector, no oblique cross-vein beyond end of subcosta, rest 
similar to Arsapnia; in hind wings the anal area reaches 
only a little beyond middle of wing; setae probably short, 
the joints beyond the first two three much elongate; in type 
species apparently but seven joints. 
Nemocapnia Carolina sp. nov. 
Figures 1, 2, and 6 
Body black, antennae and legs slightly paler, all densely 
