Bull U. S. F C 1895 The Amencan Lobster 



Plate 42. 



Fig. 154 



V\K. 155 





u: oX 



Fig. 161 



Fig. 156 





■^ i > .- 



^^ 



Fig. 159 



Fig 102 



Fig. 157 



&"•":':■'■ "-'-v> 



'<&.■;•; 



Fig. 160 



Fig. 163 



Fig . 164 



Fig. 165 



F. H. Herrick ad nut. del. 



METAMORPHOSIS OF GERMINAL VESICLE. SPICULES OF GASTROLITH, AND OTHER STRUCTURES 



