222 
Psyche 
[June-Septernber 
rnrn. The details of venation are shown in figure 2. Body length, 
from front of mesothorax to end of abdomen, 25 mm; length of 
abdomen, 18-19 mm; width, 4-5 mm. 
Holotype: no. YPM67, Peabody Museum, Yale University (ob- 
verse and reverse). 
As shown in Handlirsch’s figure, this fossil includes the thorax, 
abdomen, and parts of both pairs of wings, which rest obliquely 
backward. His figure of the wings is essentially accurate, although 
his attempted restoration of the complete wing turns out to be 
incorrect, at least to the extent that we now know it. The body is 
also satisfactorily represented in his figure, although the prothorax 
is too large. The abdominal segments of this specimen possess 
paired lateral expansions, apparently strongly sclerotized and simi- 
lar to those present in at least some Palaeodictyoptera. Handlirsch’s 
figure depicts these as membranous areas bordering the terga, but 
there is nothing in the fossil to support that interpretation. The 9th 
abdominal segment bears a pair of longitudinal ridges, converging 
distally, as shown in Handlirsch’s figure. These are almost certainly 
the basal portions of the valves forming the ovipositor. Cerci are not 
preserved. 3 The dimensions of this specimen are as follows: fore 
wing, length (as preserved), 20 mm; width uncertain; hind wing, 
length (as preserved), 20 mm. Body length (from front of meso- 
thorax to end of abdomen), 25 mm; pterothorax, length, 6.3 mm; 
width, maximum, 6 mm; abdomen, length, 18 mm; width, maxi- 
mum (3rd segment), 4.5 mm; prothorax, length, 3.5 mm; head 
absent. 
The three recently discovered specimens of calopteryx are as 
follows: 
1. No. JJF-IL1 1-007, collected by J. J. Fagan in Pit 11 (strip 
mine in Will and Kankakee Counties, 3 to 5 miles south of 
Braidwood, Illinois). 4 This specimen is preserved in almost the same 
position as the type. The prothorax and the wing veins are clearer 
than in the type. Its dimensions are as follows: fore wing, length (as 
3 Most of the “whole” specimens of insects preserved in these concretions lack the 
distal parts of the wings and the distal anterior and posterior appendages, such as 
antennae and cerci. The insect’s body is ordinarily in the center of the concretion, 
which is usually too small to include the distal portions of these appendages. 
4 Mr. Fagan has now deposited this specimen in the Field Museum of Natural 
History, where it bears the number PE 25667. 
