HOW TO KNOW THE BUTTERFLIES 



several generations each year, and that the winter is passed in 

 the chrysalis state. But the early-spring form and the late- 

 spring form are not successive broods ; these are both com- 

 posed of individuals that have wintered as chrysalids, those 

 that emerge early developing into marcellus, and those that 

 emerge later developing into telamonides. All of the butter- 

 flies produced from eggs of the same season, and there are 

 several successive broods, are of the summer form, ajax a/ax. 



Caterpillar. — Length about two inches. Largest at the 

 third thoracic segment, which is made conspicuous by a wide 

 black velvety band edged with yellow. The rest of the body 

 is pea green with narrow cross bands of yellow and black. 



Food-plants. — Pawpaw, spice bush, and upland huckleberry. 



This gorgeous butterfly is well named, for its 

 wings are cross-striped in a way that at once sug- 

 gests a zebra or a tiger. To accentuate the beauty 

 of these colors and markings two purplish-blue 

 crescents ornament the anal angle of the hind 

 wing, and above each there are one or two spots 

 that look like drops of blood ; on the lower sur- 

 face the " blood " trickles across the entire wine. 



This species responds to the influence of the 

 seasons. The first form to appear in the spring 

 with the peach blossoms is called marcellus ; it 

 has the "swallow-tails" of moderate length. The 

 form that appears next is telamonides, which has 

 longer tails ; while the form that occurs in mid- 

 summer, ajax ajax, Iras still longer tails, and the 



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