282 THE COMPARATIVE MORPHOLOGY OF THE CRAYFISH. 



developed ; and, in this case, the Nauplius state is 

 passed through so rapidly and in so early and imperfect a 

 condition of the embryo, that it would not be recognized 



Fio. 74. Cancer pagv/rm. A, newly hatched Zo»a ; B, more advanced 

 Zosa; C, dorsal, and D, side view of Megalopa (after Spence Bate). 

 The figures A and B are more magnified than and D.) 



except for the cuticle which is developed and is subse- 

 quently shed. 



