TO 



COU^T GASTON .DE SAPOETA, 



OF AIX IN PROVENCE, 



WHOSE EXTENDED MEMOIRS ON THE FLORA OF THE TERTIARIES OF SOUTHERN FRANCE FORM THE BASIS 

 OF THE BIOLOGICAL CONCLUSIONS OF THIS ESSAY ; AND WHOSE UNWONTED COURTESIES HAVE PERMITT-ED 



A CAREFUL EXAMINATION OF THE MOST IMPORTANT FOSSIL BUTTERFLIES, 



^ 



THIS MEMOIR IS RESPECTFULLY INSCRIBED BY 



THE AUTHOR. 



