PLATE LXYI. 



no. 



1. DIASTOPORA PATINA, p. 458; zooecia. 



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 operculate 

 cells, with tubular orifice. 



9. , nat. size. 



10, 10 a. DIASTOPORA OBELIA, p. 462 ; portion of the crust, 



enlarged, and colony, of the natural size. 



11, 11 a. DIASTOPORA SUBORBICULARIS, p. 464; ditto, 



ditto. 



