SELLARDS. | Cockroaches. 517 
Subeostal area broad at the base, triangular, extending a little 
beyond the middle of the wing. The branches are numerous, 
once or twice forked, the first arising near the base. The distal 
branches become more oblique than the proximal. The radius 
is clearly distinct from the subcosta. The first branch is given 
off about the end of the basal fourth of the wing and is two or 
three times branched. The lower division runs in a sinuous 
course, reaching the costal border a little short of the apex, 
giving off three or four oblique, once or twice forked branches. 
The media is close to but distinct from the radius. It dichoto- 
mizes first beyond the first branch of the radius, near the end 
of the basal fourth of the wing. Both branches dichotomize 
frequently, the numerous divisions filling the distal third of the 
inner margin and the apex. The cubitus divides early. The 
area is short. A few strong oblique branches go off, having 
much the appearance of a dichotomy. The anal area is of 
moderate extent. The first anal vein in the type specimen 
gives off five superior branches. The first and second of these, 
arising near the base, are once forked; the other three are 
simple. The first four run towards the anal furrow; the fifth 
turns down parallel with the furrow and runs to the inner 
border. A forked inferior branch is also given off from this 
first anal. One-half of the anal area is thus occupied by the 
first anal vein and its branches. 
Three additional specimens of this species have come to light 
since the type was described. One of these (Yale collection, 
No. 50) has the base of the wing complete and the anal area in 
position. It is here seen that beyond the branched first anal 
are about seven thin, simple veins, curved and parallel, and 
taking the usual course from their origin to the inner border. 
This area in the type specimen is disturbed and somewhat 
crushed, so that three veins only are seen beyond the first anal. 
The apical part of the wing is preserved in Yale specimen 
No. 6, and shows well the numerous veins with the more or 
less regularly placed and rather strong cross-veins. Length 
of tegmina, 17 mm.; breadth, 7 mm. 
Formation and locality: Le Roy shales, Upper Coal Meas- 
ures, Lawrence, Kan. University of Kansas collection, Nos. 
83 and 193; Yale collection, Nos. 50 and 86; writer’s collection, 
No. 4. | 3 
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