508 University Geological Survey of Kansas.: 
one-third the length of the wing before meeting the costal 
border and gives off two or three thin, oblique, superior 
branches, which either reach the border or are lost in the fine 
reticulated meshes of the wing near the border. The sub- 
costa extends as a narrow area almost to the tip of the wing. 
A few oblique forked branches are given off back of the termi- 
nation of the costa. The radial area of the hind wing is more 
narrow than that of the front. The radius branches first 
about the middle of the wing, and has only a few divisions 
and these go to the apex. The media is more strongly de- 
veloped and gives off several superior branches which go to 
the inner border. The cubital area is strong and has nu- 
merous parallel nearly straight veins and also one or two oft- 
shoots from the upper side. The vein occupying the anal fur- 
row is once or twice forked. The first anal vein gives off 
three branches from the lower side, the first two of which end 
on the second anal vein. A few other longitudinal anal veins 
are present. The membrane of both front and hind wings is 
finely reticulated. ; 
The description of the front wing is based on nine well-pre- 
served tegmina, all of which agree closely in their specific 
characters. Radial branches one and two, both once or twice 
forked, usually arise very close together. Wing No. 1 of the 
writer’s collection has, however, these two branches united for 
some distance from their origin. There remains also the 
vestige of an earlier radial branch which, arising nearer the 
base of the radius, soon fades out and is lost in the mem- 
brane. No. 4 of the Yale collection and No. 44 of the Kansas 
collection have also the first two radial branches united at the 
base, but lack the vestige of the earlier branch. No. 23 of 
the Yale collection shows the two tegmina in position partly 
overlapping each other and somewhat arched. 
The hind wings are of particular interest, as there are seven 
exceptionally well-preserved specimens. The connection be- 
tween the front and hind wings is inferred from association, 
this being the only species of large cockroaches found at the 
locality. This inference is supported by certain resemblances 
in the venation in the central part of the wing. The vein in- 
terpreted as the costa is thin and wavering but reaches half 
the length of the wing and gives off one or two branches. The 
- gsubeosta reaches well toward the tip of the wing and has a 
few branches beyond the termination of the costa. The radius 
