BIRTH, GROWTH AND REPRODUCTION OF OYSTERS. 127 



Columbian sis West Columbia, 



lacerans Senegal. 



bicolor Senegal. 



multistriata On ships' bottoms, from Africa. 



callichroa China. 



glaucina Habitat unknown. 



sinensis China. 



crista galli Indian Ocean. 



hyotis Indian Seas. 



radiata Indian Ocean. 



megadon Peru. 



pes tigris Java. 



Lincolnii Australia. 



pyxidata Philippines. 



