Silk-Worms and Giant Night-Butterflies 81 



the glue and threads of the inner eell so that the in- 

 sect can push its way through. The small end of 

 the outer cocoon is very loosely woven and the 

 threads hold together, or rather spring together, 

 with their own elasticity, so that all the moth has 

 to do is push her head against them from the in- 

 side and crawl out into the big, big world! 



POLYPHEMUS MILLER 



The Polyphemus miller (Fig. 75) is of a shade 

 between yellow and brown; it also has Mother 

 Nature's beauty spots, or peacock- feather eye spots 

 very distinctly marked on its hind- wings; they are 

 transparent and called window spots; there are 

 also smaller ones on its fore-wings. The band 

 around the front margin of the fore-wings and 

 near the outside edge of all the wings is of a grayish 

 color. Near the outside edge of both pairs of wings 

 is a pink-edged dusky band. There is also a dis- 

 jointed reddish line with white or pink edges run- 

 ning across the fore-wings. The transparent win- 

 dow spot has two panes of glass in it, so to speak; 

 that is, it is divided by a vein running through it 

 and is enclosed in a window sash composed of yel- 



