Plate 36 

 THORNY OYSTERS 



a. Pacific Thorny Oyster, Spondylus pictorum Schreiber, 5 inches (Gulf 



of California to Panama), p. 370. 



b. Atlantic Thorny Oyster, Spondylus amencanus Hermann 3 to 4 



inches. Comes in many colors. Specimen rom the Leo burr) 

 collection. (Florida and the West Indies), p. 3b9. 



