INDEX TO VOLUME XXXI 



(* indicates new genera, species or varieties.) 



AiNSLiE, C. N. Notes on Gonatopus omhrodes, a parasite 



of jassids 169, 187 



Alexander, C. P. A new species of Dixa from Argen- 

 tina 294 



Undescribed crane-flies from Argentina 215 



An undescribed species of Ptychoptera from the west- 

 ern United States 3 



Undescribed Tipulidae collected by H. S. Parish in 



Brazil 70 



Baerg, W. J. An unusual case of parasitism on Clas- 



toptera ohtusa 20 



Baker, C. F. To proposers of new genera 19 



Banks, N. A rare pamphlet 176 



Barber, G. W. Notes on the oviposition and food of 



the wheel-bug (Arilus cristatus) 107 



Branch, H. E. A webspinning sarcophagid, parasitic 



upon a mantis 276 



Braun, a. F. Coleophora apicialbella nom. nov 55 



New species of Lyonetiidae 7" 



Brimley, C. S. Notes on North Carolina dragonfiies. . . 138 



On Scolia hicincta and Scolia undata 261 



Calvert, P. P. Entomology at the convocation week 



meetings of 1919-20. 56 



Entomology in the United States National Museum 



(editorial) ' I74 



A fifty years' editorship and arthropods (editorial) .... 83 



Mental attitudes towards insects (editorial) 263 



Obituary : George B. Cresson 29 



Program and price of the News for 1921 (editorial). . . 295 



Remember the veterans (editorial) 137 



Review : An introduction to entomology 208 



Review: A little gateway to science 209 



301 



