PLATE XXV. 



«; 



Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 



Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 



Fig. 



Fig. 



Fig. 



Fig. 

 Fig. 



165. 



167. 



168. 



172. 



173. 



174. 



175. 

 175, a. 



176. 



177. 



178. 



179. 



179, a. 



180. 



181. 



182. 



183. 

 183, a. 



Mytiltjs paupercultjs. Magnified. 



Modiola cylindrica. Natural size. 



Lithophagtjs oviformis. Magnified. 



Avicula pellucida. Natural size. 



Inoceramtjs Piochii. Large valve. Natural size. 



Id. Small valve. Natural size. 



Pinna Brewerii. Natural size. 



Section. 



Trigonia Tryoniana. Natural size. 



T. Evansii. Natural size. 



T. Gibboniana, ? Young. Natural size. 



Meekia sella. Natural size. 



M. radiata. Natural size. 



M. navis. Natural size. 



Arca Breweriana. Magnified. 



CucuLLiBA truncata. Natural size. 



AxiNiEA Veatchii. Natural size. 



PAQK 



183 

 185 

 185 

 186 

 187 

 187 

 188 



188 

 189 

 190 

 191 

 192 

 192 

 193 

 196 

 197 



End view. 



