1896.] PUBLIC DOCUMENT — No. 33. 43 



KEPORT OF E:N'T0M0L0GIST. 



CHARLES ir. FEKNALD. 



During the past year a great deal of time has been devoted 

 to arranging and supervising experiments on the gypsy 

 moth, and also to preparing, in conjunction with the field 

 director, Mr. Forbush, a full report on this insect. The 

 Commonwealth of Massachusetts has spent and is still spend- 

 ing large sums of money for its destruction, and in protecting 

 the farmers of the State from the ravages of this notorious 

 pest. It seemed wise and proper to devote much time and 

 attention to the study of the gypsy moth and its habits, for 

 the purpose of discovering the best and most economical 

 methods for its destruction. 



A large amount of time has been spent in preparing a 

 complete account of our CramhidcE, which appears with six 

 colored plates and structural details elsewhere in this report. / 

 This paper is designed to give all known scientific and prac- 

 tical knowledge that we possess about these insects, and it 

 is hoped that the illustrations, in connection with the 

 descriptions, will enable our farmers to determine any of 

 these insects, and when they are found in large numbers in 

 their grass lands, as often occurs, they may be better able to 

 combat them. 



Bulletin No. 28 was prepared by this division, and con- 

 tains descriptions and illustrations of two species of canker 

 worms, the army worm, the red-humped apple-tree cater- 

 pillar, the antiopa butterfly, the currant stem-girdler, the im- 

 ported elm-bark louse and the greenhouse orthezia, together 

 with methods of holding them in check. 



On the 29th of March, my attention was called to some 

 scale insects on several young plum trees on the grounds of 



