Disonycha — Continued. 

 crenicollis, xxi, 114, 115. 

 pennsylvanica, xix, 30, 3?, 40, 41. 

 infested by Sporotrichum globulif- 

 erum, xvii, 79, 81, 82; xix, 29, 40. 

 injurious to apples, xviii, XI. 

 triangularis, xxi, 114, 115. 

 xanthomelaena, xxi, 116, 117. 

 dispar, Porthetria, xxiii, 87. 

 Dissosteira Carolina, xxi, 130, 131. 



longipennis, xxiii, 213, 229. 

 distinguenda, Melanophthalma, xxiii, 182. 

 diversifrons, Parajulus, xxiii, 223. 

 diversilineata, Petrophora, xiv, 83. 

 Dixon, J. N., Misc. Ess., 27; xv, 60. 

 Doane, R. W., xxi, 57, 102, 159. 

 Dock and rhubarb curculios, xxiii. 114- 

 115. 

 as breeding: plant of Lixus concavus, 



xxiii, 115. 

 as food olant of Apantesis arqe, xxiii. 

 75. 

 of Cabbage Plusia, xxi, 152. 

 of Colaspis brunnea, xxii, 148. 

 of Smartweed Flea-beetle, xxi, 

 119; xxiii, 191. 

 False Chinch-bug under leaves of, 



xxi, 96. 

 infested by Corn Root-aphis, xvii, 67; 

 xviii, 61, 74. 

 by Melon Aphis, xxi, 81. 

 leaves riddled by Four-lined Leaf- 

 bug, xxiii, 200. 

 Dodge, J. R., xvi, 1. 

 Dobner, E. Ph., xvii, 6. 

 Doerr, A. T., xxiv, 11. 

 Dogbane as food plant of Garden Web- 

 worm, xxiii, 90. 

 Dog-fennel, Cicadula 6-notata on, xxi, 



77. 

 Dogwood, xxiv, 121. 



as food plant of Schizoneura corni, 

 in alternation with grasses, xviii, 

 57, 86, 89. 

 Cottony Maple Scale on, xxiv, 103. 

 European, Melon Aphis on, xxi, 81. 

 flamed with gasoline blast-lamp to de- 

 stroy San Jose Scale, xxiv, 46. 

 Dolerus arvensis and D. bicolor, xiv, 

 100-102. 

 larv?e, infection experiment with, xix. 

 52. 

 Dolichopodid?e, adult of the, infected 

 with Sporotrichum globuliferum, xvii, 

 83; xix, 52. 

 Dolopius, xviii, 31. 



Doran, E. W., Misc. Ess., 6; xv, 2, 72. 

 Dor-bugs, xviii, 110; xx, 33. 

 dorsalis, Ceratomyza, xxiii, 9, 165, 226. 

 Odontocera, xxiii, 165. 



Doryphora, infection experiment with, 



xix, 35. 

 Downy Flea-beetle, xiii, 62. 



calendar of, xiii, 179. 

 Drjeculacephala mollipes, xxiii, 205. 

 Drasterius, xviii, 31. 

 elegans, xviii, 8, 29, 34-36, 54; xxi, 

 162. 

 description of, xviii, 35. 

 place of hibernation of, xviii, 35. 

 Drosophila ampelophila, xiv, 83. 

 dubia, Lachnosterna, xvii, 47, 50; xviii, 

 139; xxiv, 139, 141. 151. 

 Tenebrioides, Misc. Ess., 94. 

 corticalis, xxiii, 182. 

 Ducks, White-grubs eaten by, xviii, 124. 

 Duggar, B. M., xx, V, 26. 

 dumetorum, Polygonum, xvi, 50, 56. 

 Dung-beetles, xxiii, 227. 



injurious to Corn kernel, xxiii, 12. 

 12-punctata, Diabrotica, xvii, XI, 71 ; 

 xviii, 55, 146. 157; xxi, 115, 125; 

 xxiii. 8. 69, 187. 

 Dury, Charles, xvi, 59. 

 Dusky Leaf-bug, xxi, 92; xxiii, 199, 

 233. 

 Plant-bug as strawberry insect, xiii, 

 10. 61, 62, 124, 127, 135-138. 

 calendar of, xiii, 179. 

 description of, xiii, 136-138. 

 distribution of, xiii, 135. 

 life history of, xiii, 138. 

 preventive measures and remedy for, 



xiii, 138. 

 synonymy of, xiii, 136. 



E 



Earle, F. S., xiii. 87. 123, 162, 170; 



xiv, 80; xxiii, 115. 

 Ear-worm, Ancyrophorus planus feed- 

 ing in burrows of, xxiii, 180. 

 or Corn-worm, xxiii, 67-68, 158, 186, 

 226. See also under Corn-worm. 

 Earthworm, Misc. Ess., 25. 



Lasius alienus feeding on, xxiv, 26. 

 Eccopsis exoletum, description of, xiv, 

 118. 

 permundana, xiii, 61, 111-112. 

 Eccritotarsus elegans, xxi, 87, 90. 

 Echinorhynthus gigas as parasite of 



pigs and White-grubs, xxiv. 167. 

 Edema albifrons defoliating Oak and 



Hickory, xviii, X. 

 Edwards, Henry, xxiii, 86. 

 Eggplant as food of Garden Web- 

 worm, xxiii, 90. 

 of Potato Flea-beetle, xxi, 117. 

 infested by Common Red Spider, xxi, 



59. 

 injured by Crepidodera cucumeris, 

 xiv, 117. 



