Explanation of Plates. 5389 
PLATE LXXV. 
Fic. 18.—Etoblattina juvenis Sellards. A nymph, of which the thorax and 
a part of the abdomen are preserved. The abdominal sterna are seen 
in the outline through the terga. 
Fig. 24.—Pronotum of small, probably adult, cockroach. 
Fic. 25.—Egeg-case of cockroaches. From the Le Roy shales. 
Fig. 22.—Spiloblattina. Part of abdomen, in which are seen indications 
of color areas resembling those of Spiloblattina, to which genus the 
specimen is provisionally referred. 
Fig. 23.—A small nymph, genus undetermined. 
Fic. 19.—H. juvenis Sellards. A nymph of which a considerable part of 
the long antenne and the outline of the head are preserved. The two 
parts of the pronotum are separated. The absence of spines on the 
tibia is probably due to imperfect preservation. 
Fig. 20.—E. juvenis Sellards. One wing and half of pronotum of nearly 
mature nymph. 
Fic. 27.—Trochanter, femur, and one abdominal tergum of nymph. 
All figures are twice natural size. Original of figures 18 and 19 in the 
University of Kansas collection; all others in the writer’s collection. All 
are from the Upper Coal Measures. Figure 23 is from Deer Creek, 
twelve miles southwest of Lawrence; others are from Lawrence, Kan. 
PLATE LXXVI. 
Fig. 26.—Spiloblattina maledicta Scudder. Form with arch costal border 
and short cubitus. Original in University of Kansas Museum. Twice 
natural size. 
Fic. 28.—Schizoblattina multinervia Sellards. Twice natural size. 
Fig. 27.—Spiloblattina maledicta Scudder, sp. Typical wing with ex- 
tended cubitus. Original in University of Kansas Museum. Twice 
natural size. 
Fig. 29.—Etoblattina coriacea Sellards. Twice natural size. Anal area 
restored from the obverse side of the same specimen. Original in 
University of Kansas Museum. 
Fic. 5.—KHtoblattina sp. Original in the University of Kansas Museum. 
Fic. 6.—Ktoblattina sp. Hind wing. 
Fic. 7.—Etoblattina juvenis Sellards. Natural size. Two specimens 
lying near each other on the same slab. The nymph on the left 
shows a considerable part of the cerci, which in this specimen are 
very long. Both have the legs more or less completely preserved. As 
a result of crushing, the integument of. the nymph at the right has 
split along the dorsal line, and, spreading laterally, exposed the 
basal elements of the legs, otherwise rarely seen. The specimen has 
a large, prominent ovipositor, which is preserved on the specimen at 
the right; it is badly crushed, however, and its shape poorly defined. 
Some terga with pointed angles, and sterna with rounded angles, are 
seen detached and lying between the two nymphs. Original from the 
Upper Coal Measures at Lawrence, Kan. 
