PLATE XLVIII. 



Fig. 1. — Philosamia cynthia Auctt. <? . Raised in Brooklyn, N. Y. Vein III t small and nearly atrophied on basal 



half, becoming beyond the middle larger and better developed (a sign of degeneration and having reached 



last term of specialization). 

 Fig. 2. — Philosamia cynthia Auctt. <$ . Canton, China. Almost identical with New York insect, only III., is a little 



longer and better developed. 

 Fig. 3. — Philosamia cynthia Auctt. C? . China. 

 Fig. 4. — Philosamia cynthia Auctt. cf . China. Veins verv slender. [Philosamia cynthia auctt. =P. waVceri 



(Felder).] 

 Fig. 5. — Philosamia ricini (Hutt.). <$ . [=P. lunula I Walk), according to Rothschild.] Assam. P. ricini is the more 



primitive form; venation less atrophied. 

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