PSYCHE 
A JOURNAL OF ENTOMOLOGY 
Vol. 75 December, 1968 No. 4 
CONTENTS 
Megasecopterous Nymphs in Pennsylvanian Concretions from 
Illinois. F. M. Carpenter and Eugene S. Richardson j Jr. .... 295 
Permian Mayfly Nymphs. J arm'll a Kukal ovci 310 
The First Wingless Stonefly from Australia. Joachim lilies .... 328 
Recruitment to Food in the Ant Crematogaster ashmeadi. 
R. H. Leuthold 334 
The Genus Triaeris Simon (Araneae, Oonopidae) in Central 
America and the West Indies. Arthur M. Chickering 351 
Demetrida (Coleoptera: Carabidae) in the Moluccas. 
P. J. Darlington , Jr 360 
Author and Subject Index to Volume 75 363 
