Fig. 103. -- The scallop on the left, a* indicated by the arrow, has been killed 

 by the oyster drill, which h:i* pierced the shell with a fine hole. A year-old oyster 

 is attached to the scallop in the center, while a ( ' r< /liilulu (quarterdeeker) has 

 fastened on the scallop on the right. 



