Smithsonian Report, 191 3.— Edwards. 



Plate 5. 



POLISHED BLACK ABALONE SHELL. SHELL OF THE CORRUGATED ABALONE. 



The uniMilisheil posterior half showing m- 

 crusting worm tubes. 



A PORTION OF THE RED ABALONE SHELL WITH FOUR BLISTEF 



Pearls and Two Free Pearls. 



