Plate 11 



Page 

 Figs 1-4. Gemelli'poridra typica, new species 100 



1. Multilamellar ovicelled specimen much calcified, show- 



ing a transverse spatulate avicularium; X 20. 

 Albatross Station D. 2330, north of Cuba. 



2. Unilamellar specimen; X 20, with opercula in some 



zooecia. 

 Albatross Station D. 2390, north of Cuba. 



3. Interior; X 20, showing the aperture removed from 



the distal border of the zooecium. 



4. Frontal viewed by transparency', showing the true form 



of the aperture: X 20. 

 Albatross Station D. 2167, off Habana, Cuba. 

 5-11. Gemelli'poridra magniporosa Canu and Bassler, 1923 103 



5. Incrusting specimen; X 20, with regularly oriented 



zooecia. The avicularia are erect. 



6. Unilamellar specimen; X 20, showing the formation of 



inverted zooecia. 



7. Unilamellar specimen with giant zooecia; X 20, 

 Albatross Station D, 2169, off Habana, Cuba. 



8. Structure of the frontal; X 85. 



9. Multilamellar example; X 20, with inverted zooecia. 

 Albatross Station D. 2362, east of Yucatan. 



10. Unilamellar ovicelled specimen; X 20. Some aper- 



tures have preserved their opercula. 



11. Zoarium, natural size. 



Albatross Station D. 2157, off Habana, Cuba. 

 170 



