-.<; 



DEGENERATION. 



figures represent the Nauplius stage of animals 

 closely resembling the Barnacle : the lower figures 



Fig. 9. — Adult Barnacle or Lepas (one of the Cirrhipedes). Natural si:e 



LARVA EAUANUSj 



LARVA CHTHAMALUS 



W .ill 



Fig. to.— Development of Cirrhipedes (Barnacle and Sea-acorn). After Huxley. 



