114 Bulletin Wisconsin Natural History Society. [Vol. 8, No. 2. 



Wheeler's direction, force us to admit that this is the finest textbook 

 of a specialty in entomology that has been issued. As the only adverse 

 criticism, we would note the uncut pages and uneven fore edge as dirt 

 catchers for a book so thoroughly valuable for reference. 



Taxonomically, the book gives only a short key (Appendix B) to 

 the genera and subgenera of North American ants, of which 451 de- 

 scribed forms are listed (Appendix C) ; but the preface promises us in 

 time a monograph of the ants north of Mexico. Now that we have the 

 various phases of myrmecophilous research brought together in this 

 admirable book, it appears that there remains only for workers to 

 monograph and bibliograph the life histories of the individual species 

 as the need arises or time permits. — A. C. Burrill. 



