PSYCHE 
A JOURNAL OF ENTOMOLOGY 
Established in 1874 
Vol. 57 September, 1950 No. 3 
TABLE OF CONTENTS 
A Water-mite Parasitic in Fresh-water Clams. A. G, Humes and 
H. A. Jamnback 77 
Notes on the Habits and Habitat of Geotrupes chalybaeus LeConte 
in Florida (Coleoptera) . F. N. Young ...... 88 
Chalepus bicolor Oliv. (Coleoptera) . C. A. Frost 92 
Polyhomoa Azuma, a Synonym of Kyidris Brown (Hymenoptera: 
Formicidae) . W. S. Creighton 93 
Massachusetts Records of Cyphoderus assimilis Borner (Collembola) . 
K. A. Christiansen 94 
Some New Nearctic Collembola. D. L. Wray 95 
Ant Larvae of the Subfamily Cerapachyinae. G. C. Wheeler . . 102 
The Northernmost Extension of Bird Hippoboscidae in the New 
World (Diptera) . J. Bequaert 113 
Vespid Wasps ( Eumenes curvata ) Attracted to Smoke. C. T. Brues . 114 
The Alessandro Focarile Collection of Carabidae (Coleoptera) . 
A. Focarile . 116 
