PLATE XCVIII. 



FIG. i. Hippasteria spinosa Verrill. Type. Dorsal side; ft natural size. 



Puget Sound. Univ. of Wash. 

 FIG. 2. Amphiaster insignis Verrill. Type. Dorsal side; X !% La Paz, 



Lower Calif. Yale Mus. 



(198) 



