536,7 
T. JLQ, 
V, & 
TABLE OF CONTENTS. 
stter of Transmittal 
Production. 
iassification 
Page. 
.... 1 
. 5 
.. 9-142 
<3 
Order Hemiptera, Sub-order Heteroptera. 9 
Homoptera, 9. Subdivisions of Homoptera . 10 
Synopsis of the families of Plant-lice. 10 
Key to Hemiptera. 11 
Psyllidae—Jumping Plant-lice. (Fam.).... 12 
Genus Diraphia . 13 
Psylla. 15 
Aphididae—Family. 19 
Nomenclature. 19 
Characteristics of the Family. 26 
Life-history and Habits. 27 
Classification . 33 
Synoptical table of the Sub-families and Genera . 39 
Description of Species. 44 
Sub-family Aphidinae . 46 
Sec Siphonophorini. 46 
Genus Siphonophora. 46 
Phorodon . 69 
Megoura. 73 
Myzus . 74 
Drepanosiphum. 78 
Rhopalosiphum . 79 
* Hyalopterus. . 82 
Sec. Aphidini . 83 
Genus Siphocoryne. 83 
Aphis. 84 
Chaitnphorus... 103 
Myzocallis . 105 
Callipterus . 109 
Sec. Lachnini . 114 
Genus Lachnus. 115 
Phyllaphis . 120 
Sipha . 120 
Sub-family Pemphiginae . 122 
Sec. Schizoneurini . 125 
Genus Schizoneura. 125 
Glyphina . 142 
Vacuna . 145 
Sec> Pemphigini. 145 
Genus Pemphigus . 146 
Sub-family Chermesinae. 155 
Genus Cbermes .. 155 
Phylloxera . 157 
Sub-family Rhizobinae . 164 
Genus Rhizobius. 165 
Tychea . 167 
Species of uncertain position . 170 
Insect Enemies and Parasites . 172 
Artificial means of destruction. 179 
Remarks . 181 
Supplement. 186 
Psyllidae—Brief Synopsis of the Genera. 211 
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