TABLE OF CONTENTS. VU 



the plants at the joints, 64. Saltpetre, 65. Bisulphide of carbon 

 as a counterodorant, 65. Coal-tar and naphthaline as preven- 

 tives, 66. Additional study of the insect needed, 66. Certain 

 observations asked for. 66. Experiments made at the N. Y. St. 

 Agricultural Experiment Station, 67. Successful results from the 

 use of soap emulsion, coal-tar and Paris green, 67. The degree 

 of protection obtained, 68. Additional items in the life-histor}^ of 

 the insect, 68. 



Orgyia leucostigma, the White-marked Tussock MotK 68 



Bibliography, 68. Its history, 69. Beauty of the caterpillar, 

 70. Description and figure, 71. The cocoon, 71. The pupa and 

 the perfect insect, 72. The egg, 73. Natural history of the in- 

 sect, 73. Additional molting of the female, 74. A second brood, 

 75. Hibernation in the egg stage, 75. Attack upon lindens in 

 Brooklyn, 76. Range of food-plants in some Bonibycidce, jj. 

 Food-plants of the species, 77. Its depredations on horse-chest- 

 nut and the elm, 77. Injuries to fruit-trees, 78. Abundance in 

 Central Park, New York, 78. Attacked by seven species of insect 

 parasites, 79. The great increase in its ravages, 79. The English 

 sparrow the cause of the increase, 80. Notes upon its protec- 

 tion by the sparrow soon after its introduction in Albany, 81. 

 The sparrow protects by driving away the birds that would feed 

 upon the caterpillars, 82. Preventives and remedies : a relent- 

 less war upon the English sparrow, 83. Its injuries and preven- 

 tive measures in England, 84. Destruction of the Orgyia eggs, 

 84, Jarring the caterpillars from the trees, 85. Spraying the 

 foliage with Paris green and water, 85. Cotton bands around 

 the tree-trunks, 86. A new form of Orgyia attack, 86. Elm 

 twigs girdled at their tips and broken off, 87. Probable expla- 

 nation of the girdling, 87. Record of the falling of the twigs, 88. 

 Different features presented in the girdling, 88. Apparently a 

 local attack, 89. 



Plusia brassic^, the Cabbage Plusia 89 



Bibliography, 89. Increasing destructiveness, 90. Larva de- 

 scribed and figured, 90. The pupa and the moth described, 91. 

 List of known food-plants, 91. Distribution and injuries, 92. 

 Its resemblance to an European species, 92. Number of broods, 

 92. Cannibalistic habits, 93. Remedies found in hand-picking, 

 sprinkling with hot water and with pyrethrum water, 93. Pre- 

 ventive by catching the moths in nets, 93. 



Plusia dyaus? , 94 



The caterpillars found in a conservatory, 94. Plants eaten by 

 them, 94. Description of the caterpillar, 94. Its habits, 95. 

 Transformations of the insect, 95. Its cocoon, 96. Beauty of the 



