Plate 21 



Page 

 Figs. 1,2. Tremoschizodina lata Smitt, 1873 131 



1. Portion of the incrusting zoarium; X 20. The two 



superior zooecia are ovicelled. The tremocyst is 

 detachable. 



2. Structure of the frontal; X 85. 

 Albatross Station D. 2405, Gulf of Mexico. 



3,4. Crepidacantha longiseta, new species 135 



3. The incrusting zoarium, X 20, with ovicells. 



4. Another part of the same, X 20, showing ancestrula. 

 Albatross Station D. 2169, off Habana, Cuba. 



5-8. Lagenipora verrucosa, new species 137 



5. Group of ovicelled zooecia; X 20. 



6. Multiserial colony with expanded peristomes; X 20. 



7. Monoserial, reticulated colony; X 20. 

 Albatross Station D. 2324, north of Cuba. 



8. A linear monoserial colony; X 12. 

 Albatross Station D. 2320, north of Cuba. 



9. Mastigophora pesanseris Smitt, 1873 133 



The incrusting zoarium, X 20, showing ovicelled and 



ancestrular zooecia. 

 Albatross Station D. 2639, Straits of Florida. 



10. Crepidacantha setigera Smitt, 1873 135 



An incrusting ovicelled specimen; X 20. Marginal 



spines are no longer present. 

 Albatross Station D. 2639, Straits of Florida. 

 186 



