PLATE CVI. 



FIGS, i, 2. Evasterias troschelii (Stimpson) Verrill. Young. Dorsal and 



actinal sides; X i/^- Sitka. Yale Mus. 

 FIG. 3. Asterias acervata Stimpson. A strongly acervate young specimen ; 



X iH- Nazan, Alaska (Dall). U. S. Nat. , Mus. 



(214) 



