155 



White — Continued. 



or American, Elm, injury to, by Elm 

 Twig-girdler. xxiv, 118-121. 

 (See also under Elm.) 

 grub of Green June Beetle contrasted 

 with larvae of Lachnosterna and 

 Cyclocephala, xviii, 144. 

 White-grubs, xvii, 30-53 ; xviii, 4, 5, SO, 

 52, 53, 54, 58, 109-144; xxi, 56, 163- 

 165; xxii, 146; xxiii, 2, 4, 5, 6, 11, 

 12, 36, 37, 101, 102, 105, 184, 228. 

 and May-beetles, food and feeding 

 habits of, xvii, 41^43 ; xviii, 109, 

 114-115; xxi, 165; xxiv, 142. 

 injuries to crops by, xxiv, 165- 

 166. See also under White- 

 grubs. 

 (Lachnosterna), on the life his- 

 tory, habits, and economic rela- 

 tions of the, xxiv, 135-168. 

 migration and dispersal of, xxiv, 



145-150. 

 miscellaneous insect enemies of, 

 xxiv, 160-163. See also White- 

 grubs, diseases and enemies 

 of. 

 preventive and remedial measures 

 against, xiii, 145-146; xvii, 52; 

 xviii, 127-132; xx, 34; xxi, 165; 

 xxiv, 166-168. 

 principal enemies of, xxiv, 156— 

 160. 

 articles on, cited, xxiv, 136, 137. 

 as beet insects, xxi, 50, 52, 53, 56. 

 as strawberry insects, xiii, 61, 62, 63, 



143, 145. 

 calendar of, xiii, 179. 

 comparative immunity of clover to in- 

 jury by, xx, 32. 

 concerning time to plow ground in- 



fested by, xxiv, 165. 

 concerted action against, xxiv, 168. 

 descriptions of, xvii, 45-46; xviii, 137— 



139. 

 discussion of, cited, xxiii, 69. 

 diseases and enemies of, xviii, 127, 

 133-137 ; xxiv, 136, 167. See also 

 under White-grubs and May-bee- 

 tles, and under White-grubs, para- 

 sites of. 

 economic species of, xxiv, 136. 

 experiments with remedies for, xvii, 



43-44. 

 extent of destruction of, by Common 



Grub-Wasp, xxiv, 160. 

 field observations on, xx, 26-34. 

 food preferences of adults of, xviii, 



115; xxiv, 142-145. 

 hibernation of, xvii, 39, 52. 

 infection experiments with, xix, 70, 71, 

 72, 77, 78, 79, 82. 



White-grubs — Continued. 



injuries by, xiii, 145; xvii, 41—42; xviii, 

 109, 111-115; xxi, 164. See also 

 under White-grubs and May- 

 beetles, 

 as affected by soil and situation, 

 xx, 32. 

 to different crops by, xx, 31, 32. 

 larval period of, xviii, 119. 

 life cycles of European species of, 



xxiv, 137. 

 life history and habits of, xvii, XV, 

 31-41. 52; xviii. 115-122: xx, 33; xxi. 

 164; xxiv, 137-140. 

 light-traps for beetles of, xvi. XI. 

 locusts' eggs as food of, xviii, 114. 

 number of species of, in Illinois, xviii, 



110. 

 parasites and other natural enemies of, 

 xvii, 44, 52; xviii, 122-127; xix, 79; 

 xxiv, 156-163. See also White- 

 grubs, diseases and enemies of. 

 pupation and formation of beetle of, 



xviii, 120. 

 relations of injury by, to agricultural 

 history of land, xx, 31. 

 to agricultural management, 



xxiv, 165. 

 to soil and subsoil, manner of 

 collecting data on, xxiv, 164. 

 results of experiment with' pigs for, 



xxiv, 166-167. 

 rotation of crops for, xx. 34; xxi, 53. 

 species of. concerned in Christian 

 county. 111., outbreak of, xx, 33. 

 injurious to Corn in Illinois, xviii, 

 113. 

 summary account of, xiii, 144-145 ; 

 xviii, 109-110. 

 and conclusions concerning, xvii, 

 51-53. 

 (See also under Lachnosterna and 

 Cyclocephala.) 

 White muscardine fungus, xx, 37, 50, 51, 

 52, 53, 54, 55, 60. 90, 100. 

 culture of and infection experi- 

 ments with, xix, 25. See under 

 Sporotrichum globuliferum. 

 infesting White Ant, xix, 198. 

 number and nature of experiments 



with, xix, 27. 

 of Chinch-bug from economic 

 standpoint, xix, 27-29, 92- 

 96. 

 spontaneous outbreak of, xix, 



25-27, 29, 100, 135. 

 (See also Sporotrichum glob- 

 uliferum.) 

 Pigweed, xxi, 52. 



