18 , INDEX TO MISSOURI ENTOMOLOGICAL REPORTS. 



Page. 

 Insects injurious to the Grape-vine Continued. 



THE AMERICAN PROCRIS f 85 



Work of its larva, 85 Description of full-grown larva, 86 The moth, 

 86 It is not very destructive, 86 Two annual broods of the insects, 

 86 Parasite of the American Procris, 87. 



THE NEW GRAPE-ROOT BORER 87 



Correction of opinion formerly expressed, 87. 



The Broad-necked Priouus, 87 Duration of the larva state, 87 Its 

 transformation, 88 It bores also in Apple roots, 88 Great damage 

 done by the borer, 88 No good remedy known, 88. 



The Tile-horned Prionus, 89 How it differs from the foregoing, 89 Its 

 occurrence on prairie land, 90 Small dimorphous male form, 90 The 

 larva subsists also upon the roots of herbaceous plants, 90 Practical 

 considerations, 91. 



THK GRAPE-SEED MAGGOT 92 



The Grape-seed Curculio larva of the first report is that of a Hyinenopte- 

 rous insect, 92 The perfect insect is closely allied to the Joint-worm 

 Fly, 92 Mr. Sauuders' account and description of the imago, 93. 



The Canker Worm 94 



The eggs, 94 The larva and larval changes, 95 Importance for the or- 

 chardists to recognize the true Canker Worm, 95 The Imported Elm 

 leaf-beetle mistaken for it, 95 Description of the larva, 96 Its food- 

 plants, 96 The chrysalis. 96 Only one annual brood in the latitude 

 of Saint Louis, 97 The moth and its varieties, 97 It is less injurious 

 in Missouri than in the Eastern States, 97 Remedies, 98 Classifica- 

 tion of remedies proposed, 98 The trough and bandage systems, 99 

 Muriate of lime as remedy, 100 Jarring the tree, 101 Late fall plow- 

 ing, 101 Summer plowing, 102 Efficiency of hogs, 102 Enemies, 

 102'; Birds, mite and parasites, 102; Ground-beetles, 103; The Fraternal 

 Potter-wasp, 103. 



Cabbage Worms 104 



THE SOUTHERN CABBAGE BUTTERFLY 104 



Its geographical range, 104 Injury caused by it in Missouri, 104 De- 

 scription of the larva, 105 The chrysalis and imago, 105 Habits and 

 other food-plants, 105. 



The Potherb Butterfly, 105 It is a Northern species, 105 It will very 

 likely never occur in Missouri, 106 Geographical range of insects prin- 

 cipally influenced by temperature, 106 Isentouiic lines, 106 Southern 

 insects found near Saint Louis, 106. 



The Imported Cabbage Butterfly, 106 Amount of damage caused by it in 

 Canada, 107 Its spread westward, 107 It will undoubtedly spread 

 to St. Louis, 107 The insect in Europe, 107 History of its introduc- 

 tion, 107 The insect in its different stages, 103 Its food, 108 Reme- 

 dies, 109 Parasites, 109. 



THE CABBAGE PLUSIA 110 



Characteristics and habits of the larva, 110 Its transformations, 111 

 Remedies, 111 Description of larva, chrysalis and imago, 111 A simi- 

 lar worm occurring on thistles, 112. . 



THE ZEBRA CATERPILLAR 112 



Habits and characteristics of the larva, 112 The chrysalis and the moth, 

 113 Two annual broods, 113 Food-plants, 113. 



The Tarnished Plant-bug 113 



Injury caused by it to various trees and plants, 114 It is a very varia- 

 ble species, 114 Its development, 114 No effective remedy known, 

 115 Preventive measures, 115. 



