SELLARDS. | Cockroaches. 529 
Etoblattina sp. Pl. LXXVI, fig. 5; pl. LXXVII, fig. 3. 
A type of hind wing very abundant in the Le Roy shales is 
that shown in figure 5, plate LXXVI. There are nine speci- 
mens of the species, all conforming closely to a common type. 
‘The wings are uniformly ovate. The inner border is full and 
rounded. The costa is straight, simple, and reaches about 
one-fourth the length of the wing. The subcostal area, as is 
usual in the hind wing, is narrow and of slight extent. A 
few thin superior branches are given off from the main vein 
beyond the extremity of the costa. The radial area reaches 
nearly to the apex and has about four forked branches. At the 
base it unites with the subcosta. The median area is large and 
fills the apex. The cubitus has many oblique, simple, parallel 
branches. The few anal veins are parallel and usually simple. 
‘The first anal vein is more strongly marked but otherwise 
similar to the succeeding veins. The wings are of a light 
brownish color. 
Formation and locality: Le Roy shales, Upper Coal Meas- 
ures, Lawrence, Kan. Nos. 42, 104, 114, 118, 123, 135, 167, 
173, and 189, University of Kansas collection. 
Etoblattina sp. Pl. LXXVI, fig. 6; pl. LXXVII, figs. 1, 2, 5. 
Another and more advanced type is that seen in figure 6 of 
plate LXXVI and figures 1, 2 and 5 of plate LXXVII. The 
wing is contracted at the base and has a narrow attachment. 
The costal border near the base is quite concave, but beyond 
the middle becomes again convex. The subcosta, radius and 
‘media are united for some distance from the base. The first 
‘to separate is the media, which occupies a rather narrow 
‘space through the central part of the wing, branching first be- 
fore reaching the middle of the wing, its divisions going to the 
apex. The radius separates from the subcosta 5 or 6 mm. from 
the base, and with its branches reaches almost to the apex. 
The subcosta has only a few thin superior branches. The 
-cubitus has the typical, mostly simple, very oblique veins. At 
the base the cubitus lies very close to but does not actually 
‘unite with the stem of the veins above. The vein occupying the 
anal furrow is in this species once forked. The second anal 
is seen to give off two or three simple or forked branches. The 
anal area beyond the second anal vein is unknown. Length 
of wing, estimated, 17 mm.; width, 9 or 10 mm. 
Formation and locality: Le Roy shales, Upper Coal Meas- 
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