EXPLANATION OF PLATES. 321 



FI&. 



167. Catillus Lamarckii. Inoceramus, Sow, (from Blainville.) 



168. Crenatula mytoloides. ->| 



169. Gervillia aviculoides. L (from Sowerby's G-enera.) 



170. Pulrinites Adansonii J 



Fam. Pectinides. 



171. Pecten varius. Janera, Schum. 



172. Plica. Decadopecten, Eiippell. 



173. Hiimites Pusio. Pecten Pusio, Lam. 



174. Lima squamosa. 



175. Diancliora striata, (from Sow. Min. Con.) 



176. Plagiostoma spinosum, (from Sow. Mia. Con.) 



177. Spondylus Americanus, hinge. (See Frontispiece.) 



178. Plicatiila gibbosa. Harpax, Parkinson. 



179. Pedum Spondyloideum, (from Sow. Gen.) 

 Hemipecten, fig. 580. To be added. 



Fam. Ostracea. 



180. Ostrea edulis, 



181. Polium. Dendostrea, Sw. 



182. Grypbasa incurva. 



183. Exogyra conica, (from Sow Min. Con.) 



184. Placuna Placenta. Gen. Placenta, Sebum. 



185. Vulsella lingulata. 



186. Anomia Epbippium. 



187. Hinge of the same, with bony process. 



188. Hinge, shewing the fissure. 



189. Placunanomia Cumingii. 



190. Hinge of the same, shewing the fissure. 



191. Hinge of the unattached valve. 



192. Mulleria. (from Sow. Gen.) 



Fam. Eudistis. 



193. Spbserulites foHacea. (Radiolites is more conical.) 



194. Calceola Sandalina. 



196. Birostrites inaequiloba, internal cast of Spbserulites. 



T 



