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 
Fic. 74. Cancer pagurus. A, newly hatched Zowa ; B, more advanced 
Zowa; C, dorsal, and D, side view of Megalopa (after Spence Bate). 
The figures A and B are more magnified than C and D.) 
except for the cuticle which is developed and is subse- 
quently shed. 
