PSYCHE 
A JOURNAL OF ENTOMOLOGY 
Established in 1874 
Vol. 58 December, 1951 No. 4 
TABLE OF CONTENTS 
Notes on Alaskan Collembola. II. Three New Species of 
Arctic Collembola. K. A. Christiansen 125 
Psilobethylus in the New World (Hymenoptera: Formicidae) . 
W. L. Brown, Jr. and F. Y. Cheng 141 
Some Notes on Synonymy of the Mycetophilidae. F. R. Shaw . . 148 
Two New Species of Dictynidae (Araneae) from Panama. A. M. 
Chickering 149 
Camus hemapterus Nitzsch on a Screech Owl in Arizona (Diptera) . 
J. Bequaert 157 
The European Mantis, Mantis religiosa (Linne) , in Connecticut. 
R. M. DeCoursey . 158 
Index to Volume 58 159 
