Plate 70 



Figs. 1-3. Trochosodon parvulum, new species (p. 494). 



1. The very small orbicular zoarium, natural size. 



2. Base, X20, with the delicate granulations. 



3. Cellular surface and apex, X20. 



D. 5237. Sanco Point, east of Mindanao. 

 4-6. Trochosodon porcellanum, new species (p. 494). 



4. Two zoaria, natural size. 



5. Zooecial surface, X 20, showing indistinct zooecia arranged in quincunx. 



6. Base, X 20, with eight convexities corresponding to the zooecia. 



D. 5237. Sanco Point, east of Mindanao. 

 7-10. Trochosodon quincuncialis, new species (p. 494). 



7. Three examples of the orbicular zoarium, natural size. 



8. Base, X20, with irregular convexities and pore s arranged in quincunx. 



9. Cellular face and apex, X20, showing apertures in three rows in quin- 



cuncial arrangement. 



10. Lateral view, X20, illustrating granulation of surface 



D. 5586. Sibuko Bay, Borneo. 

 11-13. Trochosodon linearis Canu and Bassler, 1927. (p. 493). 



11. The convex zoarium, natural size. 



12. Cellular face and apex, X20, exhibiting linear arrangement of zooecia. 



13. The convex, finely granulated base, X20. 



D. 5586. Sibuko Bay, Borneo. 



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