PLATE XXV. 



PAGK 



Fig. 165. MYTILTTS PATJPERCULUS. Magnified. 183 



Fig. 167. MODIOLA CYLINDRICA. Natural size. 185 



Fig. 168. LITHOPHAGTJS oviFORMis. Magnified. 185 



Fig. 172. AVICTJLA PELLUCIDA. Natural size. 186 



Fig. 173. INOCERAMTJS PIOCHII. Large valve. Natural size. 187 



Fig. 174. Id. Small valve. Natural size. 187 



Fig. 175. PIKKA BREWERII. Natural size. 188 



175, a. Section. 



Fig. 176. TRIGONIA TRYONIANA. Natural size. 188 



Fig. 177. T. EVANSII. Natural size. 189 



Fig. 178. T. GIBBOHIANA, ? Young. Natural size. 190 



Fig. 179. . MEEKIA SELLA. Natural size. 191 



Fig. 179, a. M. RADIATA. Natural size. 192 



Fig. 180. M. NAVIS. Natural size. 192 



Fig. 181. ARCA BREWERIANA. Magnified. 193 



Fig. 182. CTTCULL.SA TRTJNCATA. Natural size. 196 



Fig. 183. AXIN^IA VEATCHII. Natural size. 197 



Fig. 183, a. End view. 



