CONTENTS 



PAGE 



Introduction 951 



General entomologic features . . . 951 



Office work 951 



Special Investigations 952 



Entomologic field station 952 



Publications 953 



Extension work 953 



Collection of insects 954 



Voluntary observers 954 



Acknowledgments 954 



Injurious insects 1 955 



Porthetria dispar, gipsy- 

 moth 955 



Ypsolophus pometellus, 



palmer worm 962 



Experimental work with insecti- 

 cides 967 



Conclusions 985 



Notes for the year 2 988 



, Fruit tree bark beetle (S c o 1 y- 



tus rugulosus) 989 



Plum curculio (Conotrache- 



lus nenuphar) 989 



Pale striped flea beetle (Sys- 



tena taeniata) 989 



Elm leaf beetle (G a 1 e r u- 

 cella luteola) 990 



1 A general account of each, giving life history 

 interesting facta brought to notice in 1900. 



PAGE 



Gold gilt beetle (Chrysochus 

 anratus) 991 



12 spotted asparagus beetle 

 (Crioceris 12-punctata) 991 



Grain beetles in a new role 992 



Snake worm (Sc i ar a species). 992 



Forest tent-caterpillar (C 1 i s i o- 

 campa disstria) 994 



Fall army worm (Laphygma 

 frugiperda) 998 



Red-bauded leaf -roller (Lopho- 

 derus triferana) 998 



Harlequin cabbage bug (Mur- 

 gantia histrionic a) 999 



Juniper plant bug (Penta- 

 toma juniperina) 999 



Elm bark louse (Gossyparia 

 ulmi) 999 



Grasshoppers 1000 



Voluntary entomologic service of 

 New York state 1000 



Summaries of reports from vol- 

 untary observers 1001 



List of publications of the ento- 

 mologist 1027 



Contributions to the collection, 



15 Oct. 1899-14 Oct. 1900 1034 



Explanation of plates 1047 



Index 1049 



and habits. Brief records of some of the more 



