PLATE XCVIII. 



Fi& I. Hippasteria spinosa Verrill. Type. Dorsal side; ^ natural size. 



Puget Sound. Univ. of Wash. 

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



Lower Calif. Yale Mus. 



(198) 



