PLATE XVIII. 



FIG. I. Leptasterias aqualis (Stimpson). Typical form, from Monterey Bay. 



Actinal side; X ^A- 



FIG. 2. The same specimen. Dorsal side; X ^Vz- 

 FIG. 3. Leptasterias leptalea Verrill. Type. Ventral side ; X i%- Sitka. 



Yale Mus. 

 FIG. 4. Orthasterias merriami Verrill, sp. nov. Type. Dorsal side; about 



natural size. 

 FIG. 5. The same specimen. Details. Actinal side; natural size. Juneau. 



Univ. of Calif. 



(38) 



