SMITH : MOLLTJSCA OF BIEKET EL QXJETJN. 1 1 



10. CoEBicuLA PLUMiNALis (Miiller). 



Hah. — Dead shells from beach of Taban Bay. 



These specimens vaiy so much in shape that the extreme forms 

 might well be regarded as distinct species. 



11. COKBICULA RADIATA (Philippi). 



Hah. — In swamp near mouth of Wady, west of road. 

 A single specimen only. 



