PLATE LXVI. 



yio. 



1. DiASTOPORA PATINA, p. 458j zooeciii. 



2. , a young colony. 



3. , ordinary caliculate form. 



4. , proliferous disk. 



5.  -, disk with the lamina wholly adnate. 



6. , stipitate form. 



7, 8. DiASTOPORA Sarniensis, p. 463 ; portions of 

 the crust, showing several of the operculatc 

 cells, with tubular orifice. 



9. , nat. size. 



10, 10 a. DiASTOPORxV OBELiA, p. 462 ; portion of the crust, 



enlarged, and colony, of the natural size. 



11, 11a. DiASTOPORA suBORBicuLARis, p. 464 J ditto, 



ditto. 



