Plate 27. 



1-14. Podophora atrata Agass. 



1. Lantern seen from above. 



2. The same as 1, seen in profile. 



3. One of the pyramids, seen from the exterior. 



4. The same as 3, seen from the interior. 



5. The same seen in profile. 



6. The same seen from above. 



7. Pyramid, in profile, from the interior. 



8. a. Epiphysis of pyramid, from the outside, b. top of a pyramid, in profile. 



9. A tooth still in its socket. 



10. a. Groove of tooth ; b. dorsal view of tooth, c. seen in profile. 



11. Part of 10 c. enlarged. 



12. Upper part of tooth. 



13. a. The brace, seen from above, b. seen in profile, c. from below, d. endwise. 



14. a. Compass seen from above, b. the same in profile. 



All the figures are taken from a denuded specimen measuring 8 mm. in diameter. 

 Hawaiian Ids., A. Garrett Coll. 



