-jT 



PSYCHE 



A JOURNAL OF ENTOMOLOGY 



Established in 1874 



VOL. XXIII 



APRIL, 1916 



NUMBER 2 



Prodryas persephone Scudder, 



CONTENTS. 



Further Studies on the Platypezidae. C. W. Johnson 27 . 



Two New Texan Parajueli. R. V. Chamberlain .33 



The Pupa of Boreus brumalis Fitch. F. X. Williams 36 



A Nematode Parasite of Root Aphids. J. J. Davis 39 



Some New Formicid Names. W. M. Wheeler 40 



New Encyrtidae from North America. A. A. Girault 41 



Three New North American Species of the Genus Agromyza. J. R. Malloch 50 



A New Species of Thripoctenus. L. T. Williams 54 



Exchange Column 62 



