156 ARTllKiil'dns : IXSEC'I'.S. 



cherry trees, folding them up so as to make a case for 

 itself. When fulh' grown, it is about two inches long, 

 green abo\'e, with rows of blue dots and yellow and 

 black marks, and its head and legs are pink. It be- 

 comes a chrysalis earl}- in August, and comes out a 

 butterfly the next summer. See ?~igure 264. 



The Asterias Butterfl}' is black, with two rows of 

 A-ellow dots on the back, and two i'o\\-s of yellow spots 

 across the wings; the hind \\'ings are tailed, and have 

 seven blue spots bet\\'ecn the two rows of yellow ones, 

 and an eye-like spot of an orange color with a black 

 center. The female is much larger, and has fewer yel- 

 low spots on tlie upper surface. The caterpillar lives 

 upon such plants as the carrot, parsnip, celery, and 

 anise. It is green, ^\'ith a band made up of yellow and 

 black spots on each ring. W'hen touched, it thrusts 

 out from the head a pair of soft, orange-colored horns. 

 These ha\'e an unpleasant odor, \\'hich makes the cater- 

 pillar disagreeable to birds. Thus it escapes being 

 eaten. In July it reaches its full growth as a cater- 

 pillar; then it seeks a sheltered spot on the side of a 

 building or fence, spins a tuft of silk, fixes its hind feet 

 in it, then makes a loop of silk, and, passing its bod}- 

 through it, rests upon it as a support ; soon it casts its 

 caterpillar skin and becomes a pupa or chrysalis. Figure 

 266. In about a fortnight the butterfl)-. Figure 267, 

 appears. 



White and Yellow Butterflies. 



The Philodicc, or Yello\\' Butterfl\', expands about 

 two inches, and is common in fields and by roadsides 

 throughout the summer. The \\'hite Butterfl\% or 

 Pieris, is of about the same size, and is also common. 



