Plate X1H. 



Fig. i. Brisaster (Schizaster) fragitis, 3 min . Abactinal side. The number of plates in the paired ambu- 

 lacra could not be made out with certainty. I ^/ I . 



2. 2 mm . Abactinal side. The number of plates in the paired ambu- 



lacra not quite certain, likewise the upper plates of the paired 

 interambulacra and the plates of the anal area a little uncertain. 

 2 %. 



3. 2 .^mm_ Abactinal side. 'z/,. 



4. 2 mm . Actinal side. The plates of the three anterior ambulacra 



are a little uncertain. 20 /,. 



5. 3'8 mm . Abactinal side. The number of plates in the paired am- 



bulacra not quite certain. '3/j. 



6. 4 ; 5' nm - Actinal side. 's/,. 



7. Side view. '3/j. 



8. Abactinal side. 's/,. 

 9. 3 mm . Side view. 's/,. 



- 10. 5'5 mm - Abactinal side. "/ r . 



- 11. 6-6 mm . Actinal side. 9/,. 



12. Abactinal side. 9/,. 



13- 7'5 mm - 8 A- 



- 14. 9"". % 



15. n' nm . s/j. 



- 1620. - Abactinal side. 3-s/,. 



