TABLE OF CONTENTS TO REPORT III. 23 



Page. 

 Insects injurious to the Grape-vine Continued. 



THE GRAPE-LEAF GALL-LOUSE. 



sects acquiring different food-habits as illustrated in the Apple-maggot 

 and the Pine-leaf Scale, 92 The different forms of the Grape leaf- 

 louse, 93 Discussion on the proper place of the insect is the classifica- 

 tion, 93 On Dr. Shimer's proposed new families Dactylosphcerldce and 

 Lepidosaphidce, 93 Objections to Fitch's specific name vitifolice, 95 

 Identity of the European with the American insect, 95 The Apple- 

 root louse is identical with the Wooly Aphis, 95 The Gall-inhabiting 

 form of the Phylloxera identical with the root-inhabiting type, 96 

 Characters of the genus Phylloxera and its place in the system, 96. 



The Colorado Potato-beetle again 97 



Its onward march, 97 It invades the Dominion of Canada, 97 How it 

 crossed Lake Michigan, 97 It will probably spread through Ontario 

 unless preventive measures are taken, 98 Excellent chance to prevent 

 its spread in Canada, 98 The Paris green remedy, 99 It is efficient if 

 judiciously applied, 99 It does not affect the tuber, 99 Natural checks 

 to the increase of the Potato-beetle 100 The Great Lebia destroying the 

 larvae,, 100 Bogus experiments, 100 The true Remedy, 101 How to 

 prevent the insect from becoming too numerous, 101 Planting early 

 varieties of potatoes, 101. 



The Codling Moth again 101 



Hay-bands avouud the trunk of the tree more effectual than rags placed 

 in the fork, 102 The Codling Moth is single-brooded in the more north- 

 ern countries, but double-brooded in the latitude of St. Louis, 102 Sex- 

 ual differences of the moth, 103 Sexual characters in the genera Ar- 

 gynnis and G-rapta, 103 The Codling Moth also infests peaches, 103. 



The Corn Worm alias Boll Worm 104 



Its geographical range, 104 Injury done by it to corn, 104 It attacks 

 tomatoes and other plants, 105 Food-plants of the Stalk-borer, 105 

 The egg of the Corn Worm, 105 Mr. Glover's account of the habits of 

 the Boll Worm, 106 The lar v^a is very variable in color, 107 Its trans- 

 formations, 107 Number of annual broods, 107 Amount of damage 

 done by it, 107 Remedies, 108 Attracting the moth by sweets, 108 

 Heard's moth-trap, 109. 



The Fall Army Worm 109 



Reports of its appearance in 1870, and how it was generally mistaken for 

 the True Army Worm, 109 It was also mistaken for the Boll Worm, 

 111 Injury caused by it. 111 How it differs from the True Army 

 Worm, 112 It is a very variable species in the imago state, 113 The 

 Spiderwort Owlet-moth, and how it differs from the Fall Army Worm 

 moth, 113 Number of annual broods and time of appearance of the 

 Fall Army Worm, 114 The eggs and how they are deposited, 114 

 Preventive measures, 115 It is never injurious during two consecutive 

 years, 115 Parasitic checks, 116 Description of the imago, 116; of 

 the varieties and the earlier states, 117. 



The Apple-tree Tent-caterpillar, or American Lackey-moth 11 



The web-nests of the caterpillar and importance of their destruction, 

 118 The egg-mass, 118 The caterpillar and its habits, 119 Traus- 

 formatious of the insect, 119 The imago very variable in color, 119 

 Food-plants of the caterpillar, 120 Remedies, 120 Parasites and 

 enemies, 120. 



