PSYCHE 
A JOURNAL OF ENTOMOLOGY 
Established in 1874 
Vol. 60 March, 1953 No. 1 
MBS. COMP. 200U 
UBR&RY 
JUN 2 6 1953 
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TABLE OF CONTEXTS 
Three New Ants Related to Strumigenys louisianae Roger. W. L. 
Brown, Jr 1 
Observations on the Reproduction of the Giant Cockroach, Blaberus 
craniifera Burm. W. L. Nutting 6 
Nemestrinidae (Diptera) of Iowa and Missouri. J . Bequaert . . 14 
On Flanders’ Hypothesis of Caste Determination in Ants. E. 0. Wilson 15 
Two New Species of Water Beetles from Florida (Coleoptera: 
Dytiscidae). F. N. Young 21 
The Biology of Brachypanorpa (Mecoptera), F. M. Carpenter . . 28 
Two New Oregon Chilopods of the Order Geophilida. R. V. 
Chamberlin 37 
