ADDITIONAL INSECTS IN 
PENNSYLVANIAN CONCRETIONS FROM ILLINOIS 
By F. M. Carpenter 1 and Eugene S. Richardson, Jr. 2 
The ironstone nodules from the Francis Creek Shale (Mid- 
dle Pennsylvanian) of Illinois continue to yield many interesting 
and significant insects. The specimens described in this paper were 
obtained in former mine pits in Grundy, Will and Kankakee 
Counties 3 , and have been made available to us by the following col- 
lectors, who have been unusually successful in finding insects: Mr. 
Jerry Herdina, Berwyn, Illinois; Mr. Joseph Makowski, Chicago; 
Helen and Ted Piecko, Chicago; Mr. Paul Tidd, Mendota, Il- 
linois; and Mr. and Mrs. Francis Wolff, Park Forest, Illinois. 
We are most grateful to them for their cooperation in loaning their 
specimens to us for study and their patience in waiting for the re- 
results. Special thanks are extended to Mr. Jerry Herdina and to 
Helen and Ted Piecko for allowing us to photograph and to make 
a thorough examination of all the insects in their collections. Sub- 
sequent papers in this series will deal with additional specimens which 
they and other local collectors have found . 4 
The insects discussed in this paper belong to four orders: Palae- 
odictyoptera, Megasecoptera, Prodonata and Protorthoptera. All of 
these specimens are of unusual interest for one reason or another, 
but two of the specimens in Mr. Herdina’s collection are of excep- 
tional significance; one is the first unquestioned nymph of the order 
Palaeodictyoptera that has been found and the other is a brachy- 
pterous adult of a protorthopteron. 
Order Palaeodictyoptera 
Family Lycocercidae Handlirsch 
Among the Palaeodictyoptera in the collections at hand there are 
two species referable to the family Lycocercidae. One of these is 
in the Herdina collection and the other is in the Field Museum col- 
lection. 
harvard University, Cambridge, Mass. 02138 
2 Field Museum of Natural History, Chicago, Illinois 60605 
3 Pit Six is about three miles northeast of Coal City, about on the Will- 
Grundy County line; Pit Eleven is about three miles south of Braidwood, 
on the Will-Kankakee County line, in northern Illinois. 
4 Partial financial support of this research is gratefully acknowledged to 
the National Science Foundation: Grant No. GB27333, F. M. Carpenter, 
Harvard University, principal investigator; and Grant No. GB8266, R. G. 
Johnson, University of Chicago, and E. S. Richardson, Jr., Field Museum 
of Natural History, principal investigators. 
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