PLATE V. 



Fig. i. Hcnricia leviuscula, var. spatulifera Verrill. Type. One of the 



actinal interradial areas, jaws, and proximal adambulacral 



spines ; X 6. Monterey. Yale Mus. 

 Fig. 2. Crossaster papposus (Linn.) M. & Trosch. An interradial area 



and jaw; enlarged. 

 Figs. 3, 4. Mediaster aqualis Stimpson. Portions of dorsal and actinal sides 



of a ray ; X 6. 

 Fig. 5. The same. Portion of dorsal side of a ray with spinules removed, 



showing plates and papular areas ; X 8. 

 Fig. 6. Ctenodiscus crispatus (Retz.) D. & Kor. Portion of an interradial 



area, inferomarginal plates, and jaws; after Ludwig, from a 



Bering Sea specimen ; X 4- 

 Fig. 7. The same. Front view of upper and under marginal plates ; X 5- 



From the same. 

 Figs. 8, 80. The same. One of the fasciolar spinules, side and profile views; 



X 120. From the same. 



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