15 



COWRIES. 



1, 2, Cyprsea undata ; 3, 4, C. nucleus; 5, 6, C. madagascariensis ; 7, C. mappa; 8, 9, C. histrio ; 10, C. panthcrina ; 11, C. scottii (youn-) - 

 12, 13, C. argus ; 14, C. tigris ; 15, 16, C. testudinaria ; 17, 18, C. scottii (adult). 



