PREFACE 



Mrs. Elsie Broughton Klots who selected the specimens of 

 insects loaned to me by Cornell University, and helped in 

 directing the drawings that were made there. I am grateftil 

 also to Miss Clara M. LeVene and Miss Vera A. Timm, of 

 New Haven, who have read all of the proof. 



The mistakes that may be discovered in this book are in no 

 way the fault of those who have read the manuscript. I can 

 only hope that if they occur they may not be too confusing and 

 that they may be reported and finally eliminated. 



ANN H. MORGANo 



Mount Holyoke College, March, "1930. 



IX 



