PREFACE 7 



Edwards's " New Catalogue of the Butterflies of North 

 America" has been followed. 



It has been suggested that I should give, in addition 

 to the table for tracing species to their description, a table 

 of larvae. In my opinion our present knowledge is not 

 sufficient to make a satisfactory one. Though much is 

 known of the preparatory stages of our butterflies, there 

 are still too many gaps : these, however, are being filled 

 up, so that in a few years a table can be given that will 

 be more satisfactory than any that could be prepared 

 now. 



G. H. FRENCH. 



CARBONDALE, ILL., June 8, 188-5. 



