Plate 31 



Page 

 Fig. 1. Mecynoecia deflexa Smitt, 1872 160 



A young zoarium, X 6, showing the expanded base. 

 Albatross Station D. 2405. Gulf of Mexico. 

 2. Oncousoecia arcuata, new species 158 



An ovicelled specimen: X 12. 

 Albatross Station D, 2639. Straits of Florida. 

 3-5. Diaperoecia radicata Kirkpatrick, 1888 160 



3. Fragmentary zoarium, natural size. 



4. Extremities of the branches of the same colony; X12. 

 Gulf of Mexico. Egmont Key, Fla. 



5. An idmoneiform ovicelled branch, X 12, with five lon- 



gitudinal rows of tubes. 

 Albatross Station D. 2405. Gulf of Mexico. 

 6-9. Peristomoecia fioridana, new species 158 



6. An ovicelled flabellate incrusting example; X 12. The 



oeciopore is visible in the middle of the ovicell at 

 the upper end of the expansion. 



7. An example with linear branches; X 12. 



8. Initial branch; X 25. The protoecium is broken. 



9. A linear branch, X 12, with very salient fine peristomes. 

 Albatross Station D. 2639. Straits of Florida. 



10. Plagioecia dispar, new species 159 



The incrusting zoarium, X 12, with ovicell. 

 Albatross Station D. 2639. Straits of Florida. 



11. Diplosolen obelium Johnston, 1838 161 



The incrusting zoarium; X 12, 

 Albatross Station D. 2319. North of Cuba. 

 196 



