Illustrations

Line drawings

Pictured key to the principal orders of insects endpapers

Comparison of millimeter and inch scales 3

The homemade insect net 6

A triangular paper envelope 9

How insects are pinned 12

Pinning blocks 12

Mounting small insects on points 13

A spreading board 14

Steps in spreading a butterfly 16

Sheets of locality labels 18

The Riker mount 19

A glass mount 20

Cages for insects 25

A water cell for projecting small living animals 28

General structure of an insect 30

Sucking mouth parts 32

Thorax and leg structure 34

Generalized wing venation 35

Stages in the development of a bug 40

Stages in the development of a beetle 40

Drawings of families, genera, etc., of insects between pp. 49 and 361 are indicated by boldface page numbers in the Index

Color Plates (.grouped after p. 195)

1. Damselflies and Dragonflies (Odonata)

2. Grasshoppers, Crickets, and Cockroaches (Orthoptera)

3. Bugs (Hemiptera)

4. Aphids, Hoppers, Cicadas, and Others (Homoptera)

5. Beetles (Coleoptera)

6. Beetles (Coleoptera)

7. Beetles (Coleoptera)

8. Beetles (Coleoptera)

9. Butterflies (Lepidoptera, Superfamily Papilionoidea)

10. Moths (Lepidoptera)

11. Moths (Lepidoptera)

12. Moths (Lepidoptera)

13. Flies (Diptera)

14. Muscoid Flies (Diptera, Division Schizophora)

15. Sawflies and Parasitic Hymenoptera (Hymenoptera)

16. Wasps and Bees (Hymenoptera)

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