PLATE II. 



pn', first pinnule. r, first radial. 



pn", second pinnule. 2, syzygy. 



1. Specimen seen facing the right anterior interradium, -|. 



2. The same specimen seen facing the anal proboscis and azygous interradium, f . 



3. Left anterior interradium of a broken specimen, |. 



4. Anal proboscis and azygous interradium of the same, \. 



5 Junction of radials and interradials of azygous interradium of specimen No. 7, f . 



6. The same of the right posterior interradium, \. 



7. The same of the left anterior interradium, *. 



8. The same of the left posterior interradium, J. 



9. Junction of radials and interradials of left posterior interradium of broken specimen, i. 



10. The same of right posterior interradium, |. 



11. Junction of radials and interradials of left anterior interradium of another specimen, \. 



12. The same of left posterior interradium, |. 



13. The same, facing the azj'gous interradium, |. 



