EASTERN UNITED STATES. 



145 



three days they turn yellow, and just before hatching 

 they change to dull gray. They are somewhat conical 

 in form, and marked by about twenty-five longitudinal 



Fig. 37. 



Danais Plexippus : «, egg, X 30; c, natural size. 



ribs, with about the same number of transverse ridges, as 

 shown in Fig. 37. 



The young larva, which hatches from this in about a 

 week, is yellowish white, with a large black head. It 

 first eats the egg-shell, after which it eats the leaver, 



Fio. '6i5, 



Danais Plexippus, mature larva (natural size). 



The mature larva is about 1.75 inches long ; the head 



yellowish, marked by two triangular black stripes. The 



body above is marked with transverse stripes of black, 



yellow, and white, as shown in Fig. 38. Joint 3 supportji 



ok 13 



