INDEX. 
YII 
Page. 
C—Continued. 
craccae . 
crataegi - •• 
crataegifoliae .. 
cucurbitae. 
cyparissae 
88 
101 
101 
67 
ID. 
Dactylosphera globosum . 
vitifoliae 
dahliae . 
dauci.••. 
dentatus . 
depressa . 
dianthi . 
diospyri .. 
diplepha . 
Diraphia . 
c alamo rum . 
femoralis. 
maculipennis. 
vernalis. 
dirhoda. 
Disagreeable Golden Eye . 
discolor . 
Dogsbane Plant-louse — 
Dog'wood Aphis . 
Drepanosiphum . 
acerifolii 
aeerini ... 
aeeris. 
quercifolii 
tiliae . 
H 
.163 
. 158 
. 88 
.181 
.115, 116 
. 164 
. 80 
. 95 
.211 
. 13 
. 14 
. 14 
. 14 
. 14 
. 67 
. 178 
196, 198, 211 
. 94 
. 101 
. 78 
. 195 
. 78 
. 78 
. 70 
. 188 
Elder Aphis . 100 
Elm Gay-louse ..•..— 111 
-leaf Aphis. 140 
-leaf Cockscomb Gall . 144 
Ephedrus plagiator . 54 
eragrostidis ... 114 
erigeronensis.58, 100, 168 
Eriophilus mali . 131 
Eriosoma lanigera . 126 
mali . 126 
pyri . 128 
ulmi. 136 
euonymi . 88 
euphorbias . 56 
euphorbicola . 57 
External Anatomy. 20 
Eye marked Golden Eye . 177 
±?‘. 
fabas . 88 
fagi . 120 
femoralis . 11 
ficus. 16 
fifteen punctata. 171 
forcata. 164 
Formica aphidieola . 156 
formicarius.. 150 
formicetorum . 150 
fragariae.68, 189 
fraxini . 117, 211 
fraxinifolii.116, 207 
fumipennela. 171 
fungicola . Ill 
furcipes . 211 
Gk 
Gall Plant-lice (Pemphiginae). 122 
galliscabri ... 88 
Garden mint Aphis. 68 
gei. 65 
Genera, List of . 12 
genistas . 88 | 
Page. 
gerardiae . 65 
gibbosa . 211 
glacialis. 171 
globosum.163 
Glyphina eragrostidis .. 144 
ulmicola .89, 142, 204 
Grain Aphis . 57 
granaria . 51 
Grape inhabiting Aphis. 55 
Phylloxera. 158 
Gray willow Aphis . 116 
Green Dolphin or Pea Plant louse .... 64 
H. 
Habits and Life History . 27 
Hamamelistes spinosus.2< 6 
helianthi . 191 
Hemiptera . 9 
Key to . 11 
Heteroptera . 9 
heucherae . 66 
Hickory Gall Aphis. 160 
Leaf witherer . 161 
Plant louse . 116 
Hippodamia convergens . 173 
glacialis . 174 
maculata . 173 
13-punctata. 174 
Homoptera. 9 
subdivisions of. 10 
Honeysuckle Plant louse. 104 
Hop Aphis. 70 
hordei. 51 
Hormaphis. 
spinosus. . 206 
Hornbeam Psylla. 18 
hortensis . . . 88 
humuli. 70, 87 
hyalinus . 196, 198 
Hyalopterus. 82 
acquilegias. 83 
pruni. 82 
hyperici.108, 193 
I. 
Ichneumon flies. 175 
iliepida.••.177, 178 
imbricator. 139 
impatientis. 98 
Insect enemies and parasites.172 
Introduction . 5 
Ironweed Aphis. 97 
vT- 
jaccte. 188 
juglandis...113 
Jumping Plant lice.12, 15 
K. 
Kaltenbach, Classification of. 33 
Key to Hemiptera. 11 
Knotweed Aphis. 62 
Koch, Classification of. 34 
Ij. 
laburni..* . 88 
Lachninas.. 114 
Lachnini. 114 
Lachnus. . 115 
abietis .117, 118 
alnifoliae. 118 
caryae. 116 
dentatus ..115, 116 
laricifex. 117 
longistigma. . 119 
pini . 117 
populi.119 
