230 
Psyche 
[September-December 
ovalis. Only the basal parts of the wings are preserved and their 
venation, so far as discernible, is like that of ovalis; the wing length 
is 22 mm. 
Teneopteron mirabile Carpenter (1943) is clearly a synonym 
of ovalis. In the type specimen (Illinois State Museum, no. 14887) 
the fore wings were outstretched, but only the costal area and R1 
were preserved, so that the wings appeared as elongate elytra. 
A somewhat similar specimen, now in the Field Museum (PE 967), 
showing a little more wing surface below R1 than the type but 
still looking elytrophorous, was described by Richardson in 1956. 
Enough of the wings and body structure is preserved in these two 
specimens to show that they are ovalis. 
As a final comment on the systematics of the species that have 
been described in Eucaenus, we should point out that two addi- 
tional insects placed by Handlirsch in that genus do not in fact 
belong to the Eucaenidae: E. rotundatus and pusillus. The type 
of the former, no. 38153, National Museum of Natural History, 
could not be found there. However, Handlirsch’s description 
(1906a), even as revised by him in 1911, states that RS had only 
three branches and that CUA was very extensively branched. 
This is precisely the opposite of the condition in the Eucaenidae. 
E. pusillus (1911), based on specimen YPM 52 in the Yale col- 
lection, is a small insect, about 15 mm long. We are unable to 
perceive the venational details shown in the left fore wing of 
Handlirsch’s figure (1911, p. 43) but we do note that the costal 
area is very narrow; in addition, the fore femur is long and slender, 
not at all like that of the Eucaenidae. These two species are clear- 
ly Protorthoptera but their family positions are certainly obscure 
and for the present they should be listed as in the Protorthoptera, 
family and genus indet. 
Specimens of Eucaenus ovalis studied 
We have been able to examine twenty-one specimens of ovalis 
in the course of this investigation. For convenience of reference, 
we include here an annotated list of these: 6 
6 The following are the localities to which reference is made in the list of specimens. 
Mazon Creek: the bed of the stream, 4 miles west and a mile north of Coal City. 
Coal City: strip mines 1 to 2 miles north of Coal City. Pit Eleven: strip mine in Will 
and Kankakee Counties, 3 to 5 miles south of Braidwood. 
