8 PREFACE 



if not all of these species Avill probably be found 

 within our limits soon, as there is a tendency to migra- 

 tion, from the southwest to the northeast with many 

 groups of insects. The causes producing this migra- 

 tion need not be discussed here. The plate of " Heli- 

 conias '' may be regarded as an exception to the above 

 suggestion. The first species is a native of Florida, 

 and the others were placed beside this to show the 

 general appearance of the group. 



The ])lates were made by the Barnes-Crosby Company 

 of St. Louis, from photographs taken at Ford's Art- 

 Gallery of Carbondale, 111. 



G. H. FRENCH. 

 Carbondale, III., 1914. 



