3ull U S F C 1895. The American Lobster. 



Plate 53. 



L^f*i 



'■■■■ 













■ife 



% 



»■.•■•' 



. & 

 - 



■ 



■ §> 



F. H. Herrich ad nat. del. 



EGG-EMBRYO. INVAGINATION STAGE. 



