13 



importance should not be ignored. It is doubtful if five years after 

 their arrival in Massachusetts either of the above named insects had 

 done injury enough to attract any more attention than is the case 

 with the Oriental Moth at the present time and it would be a mistake 

 not to recognize the possibility that we have here the first start of 

 what may perhaps prove to be another serious pest. 



ACKNOWLEDGMENTS. 



The thanks of the writer are hereby tendered to Sir George 

 Hampson of the British Museum ; to Mr. A. H. Kirkland, Mr, Frank 

 A. Bates and Mr. Joseph Silva of the Gypsy Moth Commission ; to 

 Mr. Samuel Henshaw of Harvard University; and to Dr. H. G, 

 Dyar and Mr. E. G. Titus of Washington, D. C, for assistance during 

 the study of this insect. To Prof. C. H. Fernald he is indebted for 

 much assistance in all parts of the work and particularly in connec- 

 tion with the descriptions of the adult. 



