PLATE XCVIII. 



Fig. I. Hippasteria spinosa Verrill. Type. Dorsal side; y$ natural size. 



Puget Sound. Univ. of Wash. 

 Fig. 2. Amphiaster insignis Verrill. Type. Dorsal side; X i%. La Paz, 



Lower Calif. Yale Mus. 



(198) 



