PSYCHE 
A JOURNAL OF ENTOMOLOGY 
Established in 1874 
Vol. 67 September, i960 
No. 3 
CONTENTS 
A Study of Bembix u-scripta, a Crepuscular Digger Wasp. 
H. E„ Evans 45 
Defense Mechanisms of Arthropods. II. The Chemical and Mechanical 
Weapons of an Earwig. T. Eisner 62 
A Triassic Odonate from Argentina. F. M. Carpenter 71 
On the True Nature of the Azygethidae (Chilopoda: Geophilomorpha) . 
R. E. Crabill, jr. 
76 
