420 



INDEX. 



Leg, structure of, 1 1 



Leopard Moth, 247 



Lepidoptera, general characters of, 



240 

 Lithocolletis, characters of genus, 

 285 



carpinicolella, 287 



coryli, 2S7 



faginella, 287 



messaniella, 285 



salicicolella, 287 

 Longicornia, characters of, 53 



family divisions of, 54 

 Lophyrides, 175 

 Lophyrus, characters of genus, 175 



pini, 175 



rufus, 178 

 Lygreonemetus saxeseni, 188 

 Lucanidse, 42 

 Lucanus cervus, 42 



Macrodiplosis dryohia, 352 

 Macropsis lanio, 371 

 Marble gall, 158 

 Megastigmus spermotrophus, 194 



strobilobius, 199 

 Melanoxanthus, characters of genus, 

 299 



salicis, 300 

 Melasoma populi, 62 

 Melolontha, characters of genus, 44 

 preventive and remedial meas- 

 ures against, 46 



hippocastani, 47 



vulgaris, 44 

 Milciola fagi, 354 

 Monochetus sulcatus, 33 

 Mottled Umber Moth, 257 

 Mounting, microscopic, 380 

 Musk Beetle, 55 

 Myelopkilus piniperda, 107 

 Mytilaspis, generic characters of, 

 214 



pomorum, 214 

 Myzus, generic characters of, 297 



cerasi, 297 



Nail-galls, 27 

 Nematinas, 178 



generic divisions, 179 

 Nematus abietinus, 188 



bellus, 181 



ycdlicola, 183 



ischnocerus, 184 



septentrionalis, 185 



rallisnerii, 183 

 Nematus Erichsonii, 186 

 Nervous system, 12 

 Neuroterus fumipennis, 144 



laiviusculus, 145 



lenticularis, 140 



numismatis, 146 



ostreus, 146 

 Novius cardinalis, 399 



Oak-apple, 156 

 Oak-galls, 130 



alternating generations of, 141 



development of, 132 



relation to theory of evolution, 

 134 



synoptical table of, 159 



their economic interest and teach- 

 ings, 162 

 Ocelli, 9 

 Oligotrophus caprtff, 354 



piliger, 354 

 Orchestes, generic characters of, 80 



alni, 81 



fagi, 80 



quercus, 81 

 Otiorrhynchus picipes, 68 



sulcatus, 69 



Predisca occultana, 265 



ophthalmicana, 266 

 Pemphigina?, characters of tribe, 317 

 Pemphigus, characters of genus, 317 



bursarius, 318 



pallidus, 320 



spirotheca?, 319 

 Penthina pruniana, 263 

 Philaneus spumaria, 371 

 Phloeophthorus, characters of genus, 

 113 



rhododactylus, 113 

 Phratoru vitelline?, 64 

 Phyllaphis, characters of genus, 312 



fagi, 312 

 Phyllereum, 20 

 Phyllobius maculicornis, 71 

 Phyllocoptina?, 33 

 Phyllocoptes acericola, 34 

 Phyllodecta, characters of genus, 64 



vitelline, 64 

 Phylloxera, characters of genus, 

 336 



punctata, 337 



