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 * 1 A. Nazan, Alaska (Dall). U. S. Nat. Mus. 



(314) 



