COLOR AND COLORATION 



203 



a little later (though before marcellus has disappeared) ; and 

 ajax is the summer form ; as the season advances the varieties 

 become successively larger, with longer tails to the hind wings. 



FIG. 232. 



Iphiclides ajax, form telamonides, on flower of button bush. Reduced. 



Now Edwards submitted chrysalides of the summer form 

 ajax to cold and thereby obtained, in the same summer, butter- 

 flies with the form of ajax but the markings of the spring 



FIG. 233. 



B 



Phyciodes tharos ; A, spring form, marcia; B, summer form, morpheus; under sur- 

 faces. Natural size. 



form telamonides. Some of the chrysalides, however, lasted 

 over until the next spring and then gave telamonides. 



