282 THE COMPAKATIVE MOEPHOLOGY OF THE CRAYFISH. 



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

 X^assed through so rapidly and in so early and imj^erfect a 

 condition' of the embryo, that it would not be recognized 



Fig. 74. Caiircr piuiio'as. A, newly hatched Zoosa ; B. more advanced 

 Zoa3a ; C, dorsal, and D, side view of ]Megalopa (after Spence Bate). 

 The fig'ures A and B are more magnified than C and D.) 



excei)t for the cuticle which is developed and is subse- 

 quently shed. 



