PLATE 23. 
1-83. Podophora atrata Agass. 
1-33 Spines. 
ils 
2. 
3. 
2. 
10. 
ile 
Spine, from the actinal system near the teeth. 
Spine, near the actinal system, from the odd anterior ambulacrum. 
Spine,» lower surface, near the actinal system, from the left anterior interambu- 
lacrum. 
Spine, } upper surface, near the actinal system, from the left anterior interambu- 
lacrum. 
Spine,J profile, near the actinal system, from the left anterior interambulacrum. 
Spine,» upper surface, from the actinal side of the ambitus, from the left posterior 
interambulacrum. 
Spine, | lower surface, from the actinal side of the ambitus, from the left posterior 
interambulacrum. 
Spine, | profile, from the actinal side of the ambitus, from the left posterior inter- 
ambulacrum. 
Spine, |} upper surface, at the ambitus, from the richt anterior ambulacrum. 
Spine, > lower surface, at the ambitus, from the right anterior ambulacrum. 
Spine, } profile, at the ambitus, from the right anterior ambulacrum. 
These larger radioles vary in length from 15-20 mm. 
12. 
13. 
14. 
15. 
16. 
17. 
18. 
iS: 
20. 
21. 
22. 
23. 
Spine, ) upper surface, at the ambitus, from the left posterior interambulacrum. 
Spine, ¢ lower surface, at the ambitus, from the left posterior interambulacrum. 
Spine, ) profile, at the ambitus, from the left posterior interambulacrum. 
Spine, ) lower surface, from the abactinal side, near the ambitus, from the right pos- 
terior ambulacrum. 
Spine, | top view, from the abactinal side, near the ambitus, from the right posterior 
ambulacrum. 
Spine, | profile, from the abactinal side, near the ambitus, from the right posterior 
ambulacrum. 
Spine, ) upper surface, from the abactinal side, near the ambitus, from the right ante- 
rior interambulacrum. 
Spine, | lower surface, from the abactinal side, near the ambitus, from the right ante- 
rior interambulacrum. 
Spine, | profile, from the abactinal side, near the ambitus, from the right anterior 
interambulacrum. 
Spine,) lower surface, from the abactinal side, near the ambitus, from the right ante- 
rior interambulacrum. 
Spine, | top view, from the abactinal side, near the ambitus, from the right anterior 
interambulacrum. 
Spine, | profile, from the abactinal side, near the ambitus, from the right anterior 
interambulacrum. 
