170 



THE COLORING OF BUTTERFLIES, 



mirably traced the relations of each form to the 

 others. The scientific name of this butterfly is 

 Ajax, which includes all the forms which it 

 assumes ; the special forms are called Walshii, 

 Telamonides, and Marcellus [Figs. 145-147]. Each 

 form appears at a different season of the year ; 

 Walshii is the early spring type, Telamonides the 



late spring, and Marcel- 

 lus the summer and au- 

 tumn type. Nearly all 

 the butterflies which, in 

 West Virginia, emerge 

 from the chrysalis be- 

 fore the middle of April 

 are Walshii ; between 

 that and the end of 

 May, Telamonides ; af- 

 ter this, Marcellus. The 

 first two, however, do 

 not appear to represent 

 distinct broods ; and this 

 point, to which Mr. Ed- 

 wards strangely failed 

 to draw attention in the 

 first account of his observations, is one of the 

 most extraordinary features in the history of 

 the insect ; for Telamonides is not the direct con- 

 seasonal produce of Walshii, but both are made up 

 of butterflies which have wintered as chrysalids, 



FIG. 146. Iphiclides Ajax, form 

 Telamonides, nat. size. 



