PSYCHE 
A JOURNAL OF ENTOMOLOGY 
Established in 1874 
Vol. 59 March, 1952 No. 1 
TABLE OF CONTENTS 
Six New Species of Megistops with Keys to the Known Species 
(Coleoptera) . D. H. Blake 1 
Interesting Northern Records for Eastern Hymenoptera (Formicidae 
and Embolemidae) . W. L. Brown, Jr 12 
The Female of Formica opaciventris Emery (Formicidae) . R. E. 
Gregg . . ... 13 
Correction to the Synonymy of the Ant Camponotus formosensis 
Wheeler. W. L. Brown, Jr. ..... .19 
A New Genus and Species of Isotomidae (Collembola) . P. F. 
Bellinger ..... . .20 
Mystrium in Australia (Hymenoptera: Formicidae). W. L. Brown, Jr. 25 
Notes on Some of Osborn’s Mallophaga Types and the Description 
of a New Genus, Rotundiceps (Philopteridae) . R. L. Edwards 26 
Lectotypes of Hagen Species Belonging to Certain Families of 
Trichoptera. H. H. Ross .... .31 
Observations on the Distribution of Tabanidae in the Caribbean 
Area, with New Records of Species from Trinidad, B. W. I. 
(Diptera) . E. McC. Callan 37 
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