PLATE II. 



/»/', first pinnule. r, first radial. 



/>»'', second pinnule. z, syzygy. 



1. Specimen seen facing die right anterior interradium. $. 



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

 A. 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, \. 



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



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



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



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



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 azygous interradium. *. 



