PLATE XXV. 



Fig. i. Evasterias troschelii. Type of Stimpson. Part of a ray, dorsal side ; 



about 9/10 natural size. 

 Fig. 2. The same specimen. Ventral side. U. S. Nat. Mus. 

 Figs. 3, 4. Ctenasterias cribraria ( Stimpson) . Type of Stimpson. Dorsal and 



ventral sides ; about 9/10 natural size. 

 Figs.5,6. Leptasterias aqualis (Stimpson). Type of Stimpson. Ventral side; 



about 9/10 natural size. U. S. Nat. Mus. 

 Figs. 7, 8. Leptasterias hexactis (Stimpson). Type of Stimpson. Ventral 



side; about 9/10 natural size. U. S. Nat. Mus. 



(52) 



