96 ELEMENTS OF BIOLOGY, 



respects similar to the permanent condition of certain other 

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



Fig. 25. A, Young of one of the Epizoa (AchtJieres). B, Swollen and deformed 

 adult of one of the Epizoa (Lenuza). 



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

 degraded into a completely sedentary animal, more or less 

 completely deprived 01 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. 



