122 THE ELEMENTS 



Fiff. 12tli. Chama Cor. 

 '13lh. Area Nose. 



FJLATE VII. 



Fig. 14th. Ostrea Opercularis. 



15th. Anomia Undulata. 



16th. Mytilus Incurvatus. 



17th. Pinna Muricata. 



UNIVALVE SHELLS. 



Fig. 18th. Argonaiita Argo.* 

 19th. Nautilus Pompilius.* 



PLATE VIII. 



Fig. 20th. Conus Striatus.* 



21st. CyprcBa Pediculus. 



22nd. Bulla Catina. 



23rd. Voluta Episcopalis.* 



24th. Buccinum Lapillus. 



25th, Strombits Pes Pelicani. 



