1 86 
Psyche 
[December 
Text-figure 2. Reconstructed drawing of Protelytron perm' anum Tillyard, 
based on specimens in the Museum of Comparative Zoology (Harvard 
University) and the Peabody Museum (Yale University), and showing in 
solid lines only those details actually preserved. The abdominal segmenta- 
tion and cerci, indicated by broken lines, are unknown in Protelytron 
(Carpenter, 1933). Lettering as in text-figure 1. 
cave) parallel with iA and somewhat close to it. iA without 
branches; anal veins radiating to form the anal fan; several branches 
arising from 2A; some cross veins over most of remigium, absent 
in anal fan. 
Body structure: head with small eyes, pronotum nearly square, 
with posterior corners rounded, resembling a small pronotal disc; 
fore legs short, hind legs much longer, with well developed femora; 
tarsal segmentation unknown ; abdomen apparently with seven normal 
segments, others more modified; cerci short, with distinct segmenta- 
tion. 
This family is differentiated from the Archelytridae by having a 
more distinct costal expansion and by having the cross veins of the 
elytra more regular and more numerous, with almost no branching. 
