PLATE LXXII. 



FIG. i. Leptasterias arctica (Murdoch). Actinal side; X 4- Alaska. 



No. 1428. Mus. Comp. Zool. 

 FIG. 2. Asterias polythela Verrill. Type. Actinal side ; X 3%. Arctic Alaska, 



Steamer Corwin. No. 15820. 



(146) 



