INSECT INDEX. 



Knotweed-louse. (See Knotweed-louse 

 Apliidiu?.) 



Lettuce - louse. (See Lettuce-louse 

 Aphidius.) 



Poplar-louse. (See Poplar-louse Aphi- 

 dius.) 



Wheat-louse. (See Wheat-louse Aphi- 

 dius). 



Willow-louse. (See Willow-louse Aphi- 

 dius.) 

 Aphis, viii, 79,122. 



Characters, i, 56: viii, 34,36,37.38,40.84. 



Classiflcatioa, viii, 33, 34, 36, 37. 38. 40, 44, 80. 



Compared with Calaphis betulella. viii. 

 111. 

 ♦ Hyalopterus, viii, 82. 



Lachnus, iii, 139. 

 Myzus, viii, 74. 

 Phorodon, viii, 69. 

 Rhopalosiphum, viii, 79. 

 Sipha, viii, 120. 



Food plants, i, 60; viii, 16,27,28,38. 



Habits, viii. 38, 85. 



Nomenclature, viii, 16. 



Reproduction, viii, 29,30. 



Typical species, viii, 42. 

 Aphis absinthii, viii. 69. 



acaroides, viii, 211. 



acerina, viii. 78. 



aceris, viii, 49. 



acetosa, viii, 88, 



ambrosia, viii, 211. 



amygdali. viii, 102. * 



annulipes. viii, 211. 



aparines, viii, 88. 



apocyni.viii, 94. 



armata, viii, 88. 



asclepiadis, viii, 191. 



var. lutescens, viii, 191. 



atriplicis. viii, 88, 193. 



avenffi, viii, 51,176. 



beccabunga;, viii, 97. 



bella, i, 60; viii, 106,107,197. 



berberidis, viii, 81. 



betulfe, viii, 110. 



betulroeolens, viii, 110,198,199. 



bicolor, viii, 211. 



brassicas, viii, 91. 



bursaria, viii, 34. 



caprea>. viii, 84. 



earduella, viii, IQO. 



caryai, viii, 116. 



earyeila, viii, 170. 

 var., viii, 171. 



costalis, viii, 171. 



cephalanthi, viii, 97,192. 



cerasi, viii, 42.93. 



cerasifolia',, viii, 42,93. 



cerealis, viii, 51. 



chenopodii, viii, 88. 



cireaBzandis, viii, 89. 



coreopsidis, viii, 193, 



corni, viii, 101. 



eornifolisp, viii, 101,193. 



coryli. viii. 106. 



eraecffi. viii, 88. 



cratsegi. viii, 101. 



crataggitoliaj, viii, 101. 



cucumeris, xii, 83. 



cucurbita?, xii, 84. 



dahliaj, viii. 88. 



dauci, viii, 181. 



diospyri, viii, 95. 



diplepha, viii, 211. 



discolor, viii, 211. 



euouymi, viii, 88. 



euphorbijc, viii, 57. 



fabas, v-iii, 88. 



fagi, viii, 43,120. 



fraxini, viii, 147. 



fumipennella, viii, 171. 



furcipes, viii. 211. 



galliscabri, viii, 88, 



genista?, viii, 88. 



gibbosa, viii. 211. 



granaria, viii, 51, 181. 



helianthi, viii, 194. 



hordei, viii, 51. 



hortensis, viii, 88. , 



humuli. viii, 42.87. 



hyperici, viii, 193. 



impatiens, viii, 98. 



laburni, viii, 88. 



lactucffi, viii, 61. 



lanigera, viii, 43, 126, 13;^. (See AVoolly 



Aphis of the Apple-tree.) 

 lathyri, viii, 64. 

 lutescens, >'iii, 191. 

 maculella, viii, 171. 

 mahaleb, viii. 70.72. 

 maidis, vii, 71, 75, 278; viii, 31, 89; xi, 67; 



xii, 41,44. 

 mali, vii, 73; viii, 23,25, 42,8.5. 86,89,94.121, 



130; xi, 9. (See Apple-tree Plant Louse.) 

 malifolia), viii, 86. 

 marginella, viii, 171. 

 marginipennis, viii. 211. 

 medicaginis, viii, 101,192. 

 middletoui, viii, 99. 

 nerii, viii, 95. 

 onobryehis, viii. 64. 

 oreaster. viii, 211. 

 papaveris. viii, 88. 

 pastinaca?, viii, 84. 

 persiciE, viii, 42. 

 pilosa, viii, 211. 

 pinicolens, viii, 102. 

 pisi. viii, 64. 

 populi, viii, 105. 

 populifoliie, viii, 102,151. 

 pruni, viii. 42,72,82,87. 

 prunifolia;, viii, 87. 

 punetatella. viii, 171. 

 pyri, viii, 101. 

 •luercifolitB, viii, 79. 

 quercus, viii, 108. 

 rhodryas, viii, 211. 

 ribicola. viii, 76. 

 ribis, i, 60; viii, 76. 



