PLATE I. 



O 3 



THE MONEY COWRIE 



DENTALIUM 



Vz NAT. SIZE. 

 PACHYDESMA (TIVELA) CRASSATELLOIDES 



'/2 NAT. SIZE 

 ANCIENT ROMAN BRONZE COIN 

 ABOUT 200 B.C. 



'/a NAT. SIZE 

 SAXIDOMUS ARATUS 



i..e . YATES. DEL. 



UTH. BRmONiiliEY S . F. 



ABORIGINAL SHELLMONEY OF CALIFORNIA. 



