1. OYSTERS FROM HALF MOON REEF, 



SHOWING 

 Reduced 



RED GRASS" i EGG-CASES OF PURPURA] 





P^^^i 1 









1 



1 fc^irf-"w « 









OYSTERS FROM HALF MOON REEF, SHOWING PITS AND CHAMBERS OF BORING CLAM 



(MARTESIA). Reduced %. 



