THE BUTTERFLY AND ITS ALLIES 



25 



to spin the cocoons on prepared twigs or straw. A few 

 days after the cocoon is completed its inhabitant is killed 



FIG. 23. Citheronla regalia, the Regal moth. Olive and red wings, yellow 

 spots. Nat. size. Photo, hy W. H. C. P. 



in hot water. The cocoon is made of a continuous thread 

 about three thousand metres long, of which, however, only 



FIG. 24. Larva of Citheronia regalis. Head to left. One-half nat. size. 

 Photo, hy W. H. C. P. 



about six hundred metres make good silk. This long 

 thread has to be unravelled. The outer end is loosened 



