Plate 32. 



Stereocidaris leucacantha A. Ag. and Clark. 



1. Abactinal view of partly cleaned, large specimeu ; primaries all broken. 



* 2. Actinal view of same. 



5. Interambulacral view of same. 

 4. Ambulacral view of same. 



6. Abactinal view of partly cleaned, small specimen. 

 6. Actinal view of same. 



All figures natural size. 

 Other views of specimen shown in figs. 5 and 6 will be found in Plate 15, figs. 3 and 4. 



