^ X^5.,-f5 



LIST OF PAPERS 



Alexander (Charles P.) 



New or Little-Known Crane-Flies from Japan (Tipul- 



idae; Diptera) 1 



(Issued March 31, 1920.) 



Bradley (J. Chester) 



Descriptions, Records and Notes on North American 



Nj^ssonidae (Hymenoptera) 113 



(Issued June 7, 1920.) 



Calvert (Philip P.) 



The Costa Rican Species of Epigomphus and Their 

 IVIutual Mating Adaptations (Odonata) .... 323 

 (Issued December 13, 1920.) 



Cresson (E. T., Jr.) 



A Revision of the Nearctic Sciomyzidae (Diptera, 



Acalyptratae) 27 



(Issued March 31. 1920.) 



Hebard (Morgan) 



A Revision of the North American Species of the Genus 

 Myrmecopliila (Orthoptera; Gryhidae; Myrmeco- 

 philinae) 91 



(Issued March 31, 1920.) 



Revisionary Studies in the Genus Arenivaga (Orthop- 

 tera, Blattidae, Polyphaginae) 197 



(Issued June 17, 1920.) 



New Genera and Species of ]\IelanopH found within the 

 United States (Orthoptera; Acrididae). Part III . 355 

 (Issued December 14, 1920.) 

 See Rehn and Hebard. 



McAtee (W. L.) 



Key to the Nearctic Species and Varieties of Erythro- 



neura (Homoptera; Eupterygidae) 267 



(Issued August 26, 1920.) 



