426 



INDEX. 



Leg, atructure of, 1 1 



Leopard Moth, '208 



Lepidoptera, general characters of, 



201 

 Lithocolletis, characters of genus, 

 246 



carpinicolella, 248 



coryli, 248 



faginella, 248 



messaniella, 246 



salicicolella, 248 

 Longicornia, characters of, 53 



family divisions of, 54 

 Lophyrides, 175 

 Lophyrus, characters of genus, 175 



pini, 175, 421 



rufus, 178, 421 

 Lucanidw, 42 

 Lucanus cervus, 42 

 Lygjeonemetus saxeseni, IBS 



MacrodiplofU dri/ohin, 365 

 Macropsis lanio, 309 

 Marble gall, 158 

 Megastigmus spermotrophus, 194 



strobilobius, 199 

 Melanoxanthus, characters of genus, 

 260 



salicis, 261 

 Melasoma populi, 62 

 Melolontha, characters of genus, 44 



preventive and remedial measures 

 against, 46 



hippocastani, 47 



vulgaris, 44 

 Mikiola fagi, 367 

 Monochetus sulcatus, 33 

 Mottled Umber Moth, 218 

 Mounting, microscopic, 381 

 Musk Beetle, 55 

 MyelopMhis pin'rperda, 107 

 Mytilaspis, generic characters of, 

 326 



pomorum, 326 

 Myzus, generic characters of, 258 



cerasi, 258 



Nail-galls, 27 

 Nematina^, 178 



generic divisions, 179 

 Nematus abietinu-s, 188 



bellus, 181 



(jaUicola, 183 



ischnocerus, 184 



stpttnfrionaUn, 185 



ralMsntrii, 183 

 Nematus Erichsouii, 186, 418 



laricis, 420 

 Nervous system, 12 

 Neuroterus fumipennis, 144 



la?viusculus, 145 



lenticularis, 140 



numismatis, 146 



ostreus, 146 

 Novius cardinalis, 404 



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 

 OUgotroplius capref, 367 



pi/if/er, 367 

 Orchestes, generic characters of, 80 



alni, 81 



fagi, 80 



quercus, 81 

 Orgyia antiqua, 209 

 Otiorrhynchus picipes, 68 



sulcatus, 69 



Pivdisca occultana, 226 



ophthalmicana, 227 

 Pemphiginjf , characters of tribe, 278 

 Pemphigus, characters of genus, 278 



bursarius, 279 



pallidus, 281 



spirothecte, 280 

 Penthina pruniana, 224 

 Philaneus spumaria, 309 

 Phlo3ophthorus, characters of genus, 

 113 



rhododactylus, 113 

 Phratora ritellhuf, 64 

 Phyllaphis, characters of genus, 273 



fagi, 273 

 Phyllereuni, 20 

 Phyllobius maculicornis, 71 

 Phyllocoptes acericola, 34 

 Phyllocoptin:e, 33 

 Phyllodecta, characters of genus, 64 



vitellina^, 64 

 Phylloxera, characters of genus, 298 



punctata, 299 



