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Plate 17. 



1-19. Podophora atrata Agass. 

 1-19. Valves of pedicellariae. 



Ophicephalous pedicellaria, from the buccal membrane close to 



the teeth. 

 Ophicephalous pedicellaria, from the buccal membrane close to the 



teeth, interior view. 

 Ophicephalous pedicellaria, from the buccal membrane close to the 



teeth, exterior view, profile. 

 Ophicephalous pedicellaria, from the buccal membrane close to the 



teeth, detail of articulation, exterior view. 

 Ophicephalous pedicellaria, from the buccal membrane close to the 



teeth, detail of articulation, exterior view. 

 Valves from the same pedicellaria. 

 Ophicephalous pedicellaria, from the buccal membrane close to the 



teeth, interior view. 

 Ophicephalous pedicellaria, from the buccal membrane close to the 



teeth, interior view. 

 Ophicephalous pedicellaria, from the buccal membrane close to the 



teeth, exterior view, magnified base of fig. G. 



Ophicephalous pedicellaria, from the buccal membrane close to the 



1. A valve 0.23 mm. "1 



2. A valve 0.19 mm. 



3. A valve 0.22 mm. 



4. A valve 0.22 mm. 



5. A valve 0.23 mm. 



6. A valve 0.40 mm." 



7. A valve 0.32 mm 



8. A valve 0.40 mm. " 



9. A valve 0.36 mm 

 10. A valve 0.32 mm 



teeth, exterior view, magnified base of fig. 7. 



13. A valve 0.47 mm. 



14. A valve 0.47 mm. 



Ophicephalous pedicellaria, from the buccal membrane close to the 

 teeth, exterior view, magnified base of fig. 7. 



11. A valve 0.47 mm. Tridentate pedicellaria, from the actinal side of the left anterior 



ambulacrum. 



12. A valve 0.44 mm. Tridentate pedicellaria, interior view from the right anterior am- 



bulacrum. 

 Tridentate pedicellaria, exterior view, profile, from the right ante- 

 rior ambulacrum. 

 Tridentate pedicellaria, interior view, profile, from the right ante- 

 rior ambulacrum. 

 From the same pedicellaria. 

 15. A valve 0.26 mm. I Ophicephalous pedicellaria, near the ambitus from the actinal side 



> of the right posterior interambulacrum. 

 IG. A valve 0.26 mm. J Opliiceplialous pedicellaria, serration of edge, same jjedirellari i 



as 15. 



17. A valve 0.24 mm. Ophicephalous pedicellaria, interior view from the abactinal side of 



the right posterior interambulacrum. 



18. A valve 0.11 mm.l Globiferous pedicellaria, exterior view from the abactinal side of 



y the left posterior ambulacrum. 



19. A valve 0.11 mm. J Globiferous pedicellaria, profile, same pedicellaria as 18. 



