PLATE CVIL 



FIG. i. Mithrodia bradleyi Verrill. Type. Dorsal side; Y\ natural size. 



Yale Mus. 

 FIG. 2. Echinaster tenuispinus Verrill. Type. Dorsal side; ?4 natural size. 



La Paz. Yale Mus. 

 FIG. 3. Henricia leviuscula spiculifera Clark Actinal side; X i%- Bering 



Island. U. S. Nat Mus. 



(216) 



