INDEX TO VOL. XXVIII. 



(* indicates 7iew genera, species or varieties.) 



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



of Praoii 364 



Baker, A. C. On the Chinese gall (ill.) 385 



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



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



Blackmore, E. H. Entomology in British Columbia. . . .469 



Blaisdell, F. E. a correction in Omits 234 



Studies in the tenebrionid tribe Eleodiini, No. 2 221 



Blaisdell and Reynolds. A new Omiis (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 diniidiafa apicalis 266 



The convocation week meetings jj, 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. VUl. A new genus 



allied to Cora (ill.) 259 



Chamberlin, W. J. A correction in Trachykele 234 



Notes on some Buprestidae of northern California. 129, 166 

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



larvae 454 



Cockerell, T. D. a. Entomology at the United States 



National Museum 55 



New bees from Costa Rica 200 



A second CoUctcs with spotted wings 363 



Some bees of the genus PsacnytJiia 302 



481 



