Plate 10 



Page 

 Fig. 1. Gemelliporella asper CsLiiu and Bassler, 1923 90 



Ovicelled iocrusting colony; X 20. 

 Albatross Station D. 2322, north of Cuba. 

 2, 3. Schizopodrella falcifera, new species 95 



2. Incrusting specimen, X 20, exhibiting the small avic- 



ularia and the sporadic large falciform ones. 



3. Structure of the frontal; X 85. 

 Albatross Station D. 2365, east of Yucatan. 



4-6. Schizopodrella floridana Osburn, 1914 93 



4. Surface of zoarium; X 20, with ovicelled and nonovi- 



celled zooecia. 



5. Structure of the frontal; X 40. The tentacular 



sheath is visible in one zooecium. 



6. Frontal of zooecial; X 85. 



Albatross Station D. 2363, east of Yucatan. 



7. Hippoinenella rubra, new species 108 



Incrusting ovicelled specimen; X 20. Some of the cells 



are operculated. 

 Albatross Station D. 2405, Gulf of Mexico. 

 8-10. Stylopoma spongites Pallas, 1766 91 



8. Group of nonoriented cells on a bilamellar frond; 



X 20. 



9. Interior showing the form of aperture and absence of 



condyles; X 20. 



10. Bilamellar fronds; X 2. 



Albatross Station D. 2405, Gulf of Mexico. 



11. P aellina radiata MoW, 1803 73 



Ordinary zooecia; X 20. 



Albatross Station D. 2650, Bahama Islands. 



175 



