In the bibliographical references under the titles of the individual 

 exhibits in this catalogue the most comprehensive general articles have 

 been indicated, and especial care has been taken to quote such publi- 

 cations as are most accessible. Reference to many of the earlier 

 articles may be found in Bui. 31, Div. Ent, U. S. Dept. Agric, 1893, 

 this being an index to the exhibit at the World's Columbian Expo- 

 sition. In the systematic index the more important recent changes in 

 entomological nomenclature have been cared for by cross references 

 from old names to new names for both genera and species. 



Persons desiring further information than can be gained from this 

 catalogue or from conversation with the attendant in charge of exhibit 

 are requested to address the writer at the U. S. Department of Agri- 

 culture, Washington, D. C. 



L. O. Howard, 



Entomologist. 



