CONTENTS 



Introductory 1 53 



Transmittal 153 



General entomologic features 153 



Elm-leaf beetle 154 



San Jos^ scale 154 



Office publications 1 54 



Office work 155 



Collection of insects 155 



Division library 1 56 



J. A. Lintner 156 



Acknowledgments 156 



Injurious insects « 158 



Bytiirus unicolor, the pale brown 



Byturus 158 



Trypfta canadensis^ the goose- 

 berry fruit fly 160 



Notohphus leucostigma, the white- 

 marked tussock moth 1 63 I 



Clisiocampa americatta, the ap- * I 



pie-tree tent caterpillar 177 



Clisiocampa disstria, the forest tent 



caterpillar 191 



Af antes Ira picta, the zebra cater- 

 pillar 201 



Xylina avtennaia Walker 207 



Lecanium tiilipiferaey the tulip-tree 



scale 213 



Lepisma domestica, bristle-tail : fish 



moth 216 



Enrypelvia hentzii^ the molting of 



a tarantula 219 



Hints about insecticides 221 



How insects feed 221 



Operation of contact insecticides.. 222 



Useless remedies 223 



Preventives 223 



Need of experiment 223 



Arsenical compounds 224 



Internal and contact insecticides 



combined 226 



Contact insecticides 226 



Fumigation 228 



Some insects of the year in New York 



state 231 



List of publications of the entomolo- 

 gist 243 



Contributions to the collection in 189S, 255 



Explanation of plates 264 



Index 265 



a A yencraraccount and bibliojjraj>liy is (jivcn of each. 



