96 



ELEMENTS OF BIOLOGY. 



respects similar to the permanent condition of certain other 

 Crustaceans (such as the little Cyprides). The adult, how- 



A B 



Fig. 25. — A, Young of one of the Epizott {Achtheres). B, Swollen and deformed 

 adult of one of the Epizoa {Lern<Ea). 



ever, is in these cases more or less swollen and deformed, 

 degraded into a completely sedentary animal, more or less 

 completely deprived of organs of sense, and leading an 

 almost vegetative life. As a compensation, however, organs 

 of reproduction are developed in the shapeless adult, and 

 it is in this respect superior to the locomotive but sexless 

 larva. 



