Elm Twig-girdler — Continued. 



natural checks on multiplication of, 



xxiv, 128-131. 

 nature and extent of injury by, 



xxiv, 120-121. 

 oviposition of, xxiv, 122, 126, 127. 

 period of injury by, xxiv, 121. 

 protective measures against, xxiv, 



131-133. 

 pupation of, xxiv, 124, 125, 126. 

 recognition of injury by, xxiv, 119. 

 White, infested by Elm Bark-louse, 

 xiv, 115. 

 injury to, by Elm Plant-louse, xiv. 

 114. 

 by Three-banded Leaf-hopper, 

 xiv. 115. 

 killed by Elm-borer, xiv. 112. 114. 

 Elms, Lachnosterna beetles collected 



from, xxiv, 141. 

 elymi, Isosoma, xiii, 32; xiv, 37. 

 Elymus americanus, Hessian-Fly puparia 

 on, xvii, 61. 

 canadensis infested by Isosoma ely- 

 mi, xiv, 37. 

 emarginatum, Acridium, xxi, 132. 

 Emblethis, xxi, 93. 

 arenarius, xxi, 94. 

 griseus, xxi, 93, 94. 

 Emerton, Jas. H., Misc. Ess., 129. 

 Emphvtus maculatus. xiii, 61, 69, 71- 

 76; xiv, 77-78. See Strawberry 

 False Worm. 

 Empoa, Misc. Ess., 23. 



albopicta, xiii, 181, 182; xiv. 117; 

 Misc. Ess., 10. 23; xv, 66: xxi. 77. 

 description of, xiii, 181. 

 Empoasca, Misc. Ess., 23; xxi, 67. 

 albopicta. xxi, 77. 

 flavescens, xxi, 67, 78, 79. 



var. birdii, xxi, 79. 

 mali, xxi, 77-79. 



color and distinctive markings of 



adult of. xxiii, 123. 

 food plants and life history of, 



xxi. 78-79. 

 general description of, xxi, 67, 78. 

 injury to leaves of Corn by, xxiii, 



121. 

 on life history and distribution of, 



xxiii. 123. 

 species likelv to be confused with, 

 xxi, 78. 

 obtusa, xxi. 78. 

 Empretia stimulea. Misc. Ess., 62; 



xxiii, 173. 

 Empusa, xix, 58, 59. 

 aphidis, xix, 58. 

 grylli as parasite of Diedrocephala 



mollipes, xxi, 72. 

 infesting Chinch-bug, xvi, 45, 46. 



Endeis carnosa, xviii, 101. 



Endive as food plant of Noctua plecta, 



xxi, 105. 

 Engerling, xviii, 110. 

 English Grain-louse, xxiii, 206-207. 

 Sparrow, June-beetles and their lar- 

 va? eaten by, xviii, 123. 

 Southern Corn Root-worm eaten by, 

 xviii, 152. 

 Walnut as food plant of San Jose 

 Scale, xx, 1 ; xxi, 13. 

 Entomophthora, xix, 21 ; xx, 50, 52, 53, 

 54, 58, 59, 62, 64, 67, 68, 69. 

 aphidis on Chinch-bugs, xix, 23, 81, 

 84, 110, 138; xx, 52, 56, 57, 58, 

 61, 63, 65, 67, 70, 71, 91. 

 infection experiment with, xix, 81. 

 infesting white ants, xix, 198. 

 fresenii, distribution of, xviii, 75. 

 infesting Corn Root-aphis, xviii, 74. 

 plant-lice, xix, 86. 

 infesting or destroying Chinch-bug, 

 xvi. 45, 48, 49, 56; xvii, 74, 76, 78; 

 xix. 21. 

 musca?, xix, 19. 

 Epagoge sulfureana, xxiii, 174-175. 

 ephemeraeformis, Thvridoptervx, xxii, 



135. 

 Ephestia kuehniella in Europe and 

 America, xix. Appendix. 

 zese. Misc. Ess., 91. 

 ephilida, Lachnosterna, xvii, 47, 48; 



xviii, 116, 139. 141; xxiv. 153. 

 Epicserus imbricatus. Misc. Ess., 108; 

 xxi. 143-144; xxiii, 113-114. 

 food of, xvi, 76. 



note on life historv and habits of. 

 Misc. Ess., 21. 

 Epicauta cinerea, Misc. Ess., 19, 51 : 

 xv, 4; xxi, 138, 140. 

 distinctions as to color, xxi, 138. 

 (See also Blister-beetle, Ash-col- 

 ored.) 

 marginata. xxi. 141. See also un- 

 der Epicauta cinerea and E. mar- 

 ginata. 

 maculata, xxi, 138, 139. 

 marginata, xxi, 138, 141: xxiii, 111-113. 

 killed by gasoline blast-lamp, xxiv. 

 54. 

 penF.sylvanica. Misc. Ess.. 19, 107; 



xv. 4: xxi, 138; xxiii, 111-113. 

 vittata. Misc. Ess., 19. 51. 107: xv. 4; 

 xxi, 140; xxiii, 111-113. 

 infested with Sporotrichum globulif- 



erum, xix, 140. 

 var. lemniscata distinguished, xxi. 

 140. 

 spp.. Misc. Ess.. 53; xv, 41. 

 Epitrix cucumeris, xxi. 117; xxiii, 190. 

 Epizeuxis semula, xxiii, 86, 226. 



