INDEX TO VOLUME XXXI. 



(* indicates neiv genera, species or varieties.) 



AINSLIE, C. N. Notes on Gonatopus ombrodes, 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 obtusa 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 apicialbdla nom. nov 55 



New species of Lyonetiidae 7^ 



BRIMLEY, C. S. Notes on North Carolina dragonflies. . . 138 



On Scolia bicincta 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) 1 74 



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 -?o<> 



301 



