CEYLON PEARL OYSTER REPi 



- OPEPODA PLATE _X1I. 





Andrew 



M'Farlaite i Krskine I i 



Figs. 1-10. Porcellidium fimbhiatum.Claus. Figs II 14. ( i idium brevicaudatum 

 Figs. 15-18, Porcellidium acuticaudatum. Figs.19-22,Porcellidium ravan^e . 



