INDEX TO VOL XXVFII. 



(* indicates new genera, species or varieties.) 



AINSLIE, C. N. Notes on the construction of the cocoon 



of Praon 364 



I'.AKER, A. C. On the Chinese gall ( ill.) 385 



BANKS, N. New mites, mostly economic ( ill.) 193 



BERNIIEIM, J. L. Swarms of butterflies (ill.) 339 



BLACKMORE, E. H. Entomology in British Columbia. . . . .i/><; 



BLAISDELL, F. E. A correction in Omits 234 



Studies in the tenebrionid tribe Eleodiini, No. 2 221 



l)i,AiSDEi,L and REYNOLDS. A new Omits (ill.) 49 



BRUES, C. T. Three new West Indian species of the ich- 



neumonid genus Eiphosoma (ill.) 450 



BUCHHOLZ, O. A new species of Acronycta 183 



CALVERT, P. P. Advances in knowledge of fossil insects. 80 



Ants vs. men 185 



Calopteryx dimidiata apicalis 266 



The convocation week meetings 77, 468 



The lack of entomologists (editorial) 373 



The national defense against and by insects 283 



The News for 1917 (editorial) 39 



The News for 1918 (editorial) 424 



Review : Tillyard's Biology of dragonflies 475 



Specialization in entomology 140 



Studies on Costa Rican Odonata. \ 111. A new genus 



allied to Cora (ill.) 259 



CHAMBERLIN, W. J. A correction in Trach\kcle 234 



Notes on some Buprestidae of northern California. u<;, 166 

 CHIDESTER, F. E. Dytiscus as a destroyer of mosquito 



larvae 454 



COCKERELL, T. D. A. Entomology at the United Slates 



National Museum cq 



New bees from Costa Rica 200 



A second Collctcs with spotted wings 36^5 



Some bees of the genus Psacnythla 302 



481 



