Plate 19. 



1-16. Podophora atrata Agass. 

 1-16. Valves of pedicellarias. 



1. A valve 0.53 mm. Tridentate pedicellaria, exterior view, near the actinal system, 



from the right posterior ambulacrum of a specimen 18 mm. in diameter, including 

 the spines. 



2. A valve 0.55 mm. Tridentate pedicellaria, near the actinal system, from the left pos- 



terior ambulacrum, same specimen as 1. 



3. A valve 0.71 mm. Tridentate pedicellaria, midway between the actinal system and 



the ambitus, from the right anterior ambulacrum of a specimen 35 mm. in diameter, 

 including the spines. 



4. A valve 0.66 mm. Tridentate pedicellaria, midway between the actinal system and 



the ambitus, from the odd anterior ambulacrum, same specimen as 3. 



5. A valve 0.84 mm. Tridentate pedicellaria, at the ambitus, from the left anterior 



ambulacrum, same as 3. 



6. A valve 0.83 mm. Tridentate pedicellaria, midway between the actinal system and 



the ambitus, from the odd posterior interambulacrum, same as 3. 



7. A valve 0.81 mm. Tridentate pedicellaria, near the actinal system, from the right 



posterior ambulacrum of a specimen 67 mm. in diameter, including the spines. 



8. A valve 0.85 mm. Tridentate pedicellaria, near the actinal system, from the left 



anterior ambulacrum, same specimen as 7. 



9. A valve 0.90 mm. Tridentate pedicellaria, midway between the actinal system and 



the ambitus, from the left posterior ambulacrum, same as 7. 



10. A valve 0.82 mm. Tridentate pedicellaria, at the ambitus, from the right posterior 



ambulacrum, same as 7. 



11. A valve 0.47 mm. Tridentate pedicellaria, midway between the ambitus and the 



abactinal system, from the left anterior ambulacrum, same as 7. 



12. A valve 0.74 mm. Tridentate pedicellaria, on the actinal side of the ambitus, from 



the right posterior ambulacrum, same as 7. 



13. A valve 0.41 mm. Tridentate pedicellaria, near the ocular plate, from the left anterior 



ambulacrum, same as 7. 



14. A valve 0.14 mm. Triphyllous pedicellaria, near the actinal system, from the left 



anterior ambulacrum, same as 7.  



15. A valve 0.12 mm. Triphyllous pedicellaria, from the abactinal side of the ambitus, 



from the right posterior ambulacrum, same as 7. 



16. A valve 0.11 mm. Triphyllous pedicellaria, near the apical system, from the left 



anterior ambulacrum, same as 7. 

 The same valve in each pedicellaria is figured. The enlargement of the figures is about 

 the same. All the figures present an exterior view. 

 Hawaiian Ids., A. Garrett Coll. 



