ECOLOGY OF ISLE ROYALE. 275 



1. Argynnis atlanU». 



2. Brenthis myrina. 



3. Brenthis tellona. 



4. Eugonia j-album. 



5. Vanessa milherti. 



6. Basilarchia arthemis. 



These forms may well be called members of the Canadian biota for they 

 ■only extend a short distance southward on the lowlands of the United 

 States, but reach much farther south at higher altitudes. 



2. Much the same northern limit as group 1, but reaching much 

 farther south of the ' above southern lowland limit. 



1. Papilio glaucus tiurnus. 



2. Colias philodice. 



3. Phpciodes tharos. 



4. Euvanessa antiopa (Asiatic). 



5. Vanessa atalanta {Anisitic) . 



6. Vanessa hunteri. 



7. Vanessa cardui (cosmopolitan). 



8. Aiiosia plexippus (Nearly cosmopolitan). 



9. Epidemia epixanthe. 

 10. Amihfscirtes vialis. 



3. Species of distinctly Rocky Mountain or Rocky Mountain and 

 Pacific coast distribution, and reaching their eastern limit in the Lake 

 Superior region. 



1. Epidemia dqrcas. 



2. Gupido saepiolus. 



3. Argynnis cypris. 



4. Of very extensive geographic range, Asiatic or Cosmopolitan. 



1. Pyrameis cardui. 



2. Anosia plexippus. 



3. Vanessa atalanta. 



4. Euvanessa antiopa. 

 Probable geographic origin: 



1. Papilio glaucus turnus, S. American. 



2. Colias philodice, American. 



3. Argynnis atlanta, Asiatic. 



4. Brenthis myrina ^ Asiatic. 



5. Brenthis tellona, Asiatic. 



<6. Phyciodes tharos, American. 



7. Eugonia j-aVbum, Asiatic. 



'8. Euvanessa antiopa, Asiatic. 



9. Vanessa milherti, American. 



"10. Vanessa atalanta, Asiatic. 



11. Vanessa hunteri, American. 



12. Vanessa cardui, Amercian. 



13. Basilarchia arthemis, American. 



14. Anosia plexippus, So. American. 



15. Cupido saepiolus, West No. Amer. 



16. Epidemia evixanthe, Eastern U. S. 



17. Epidemia dorcas, W. No. Amer. 



18. Amhlyscirtes vialis, No. Amer. 



