TABLE OF CONTENTS 
Page 
List of Illustrations. Ill 
Letter of Transmittal. 1 
Cabbage Insects. 7 
The European Cabbage Butterfly. 8 
The Southern Cabbage Butterfly. 25 
The Pot-herb Butterfly . 26 
North American species of Pieris. 26 
The Cabbage Pionea. 37 
The Cabbage Plusia. 40 
The Painted Mamestra. 51 
The Cabbage Tinea. 53 
Insects and other Parasites affecting Domestic Animals.. 57 
Sheep Parasites . 59 
The Sheep Bot-fly. 60 
The Sheep Tick. 63 
The Scab Mite . 64 
The Liver Fluke. 67 
Hydatid of the brain .' 69 
Manual of Economic Entomology. 71 
The Acrididae of Illinois. 73 
Classification. 80 
Key to the Families of Orthoptera. 82 
Key to the sub-Families and Groups. 83 
Key to the sub-Families and Genera. 83 
Key to the Illinois Species of Acrididae. 87 
Description of Species. .‘ 97 
Appendix. 141 
Index. 143 
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