TABLE OF CONTENTS. 
Page 
INTRODUCTION. 5 
INSECTS INJURIOUS TO THE APPLE-TREE.13 
1. The White-marked Tussock Moth ( Orgyia leucostigma. Sm.-Abb.).13 
2. The Fall Web-worm (Spilosoma lextor. Harris).18 
8. The Lesser Apple Leaf-folder ( Tortxix malivorana. N. sp.).20 
4. The Oyster-shell Bark-louse ( Mytilaspis conchiformis. Gmelin.).24 
INSECTS INJURIOUS TO THE PEAR-TREE.47 
5. The Callimorpha Pear-caterpillar ( Callimorpha Lecontei, Boisd. var. fulvi- 
cosia. Clemens.).47 
INSECTS INJURIOUS TO THE PLUM-TREE.51 
6. The Green, Chestnut-backed Plum-caterpillar (Acronycta superans , Guenee)51 
INSECTS INJURIOUS TO THE GRAPE-YINE.54 
7. The American Yine-Chafer (Anomala lucicola. Fabr.).54 
8. The Green, Cream-spotted Grape-worm ( Amphipyra pyramidoides. Guen.). .56 
INSECTS INJURIOUS TO THE CURRANT.59 
9. The Spinous Currant-caterpillar ( Vanessa ( Grapta) Progne. Fabr.).59 
10. The Four-striped Plant-bug ( Capsus 4 -vittatm. Say.).61 
INSECTS INJURIOUS TO THE POTATO.68 
11. The Colorado Potato-beetle ( Doryphora ]0dbieata. Say.).63 
INSECTS INJURIOUS TO THE ROSE.,.79 
12. The Rose-slug ( Selandria Rosee. Harris. ).79 
INSECTS INJURIOUS TO THE PINE. 83 
13. The Pine Leaf-louse ( Mytilaspis pinifoli Fitch.).83 
