IV SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I46 



titiousness is inherent in a presentation of this sort in contrast to 

 the presentation in a textbook of anatomy or morphology. To re- 

 move the repetition would require so many cross references that the 

 utility of the compilation would be seriously curtailed. Some of the 

 repetition has been removed during editing this manuscript, but some 

 of it has been left in for the same reason that the author put it there 

 in the first place. With the subject-type of arrangement, instead of 

 alphabetical, some of the repetitions are brought together in adja- 

 cent articles where they become obvious in a way they would not 

 have been were the manuscript complete and alphabetically arranged. 



Bibliographic references are limited to those he had written into 

 the text. 



It is one of the losses to entomology that this encyclopedia was not 

 completed by the author. But even this group of essays is a contribu- 

 tion. Unfortunately, it is his last contribution to entomology. 



A. Glenn Richards 

 Department of Entomology 

 University of Minnesota 

 St. Paul, Minn. 



