Natural Science, vol. vii 



[Plate X. 



ASTEROIDEA AND A HoLOTHURIAN. 



Fig. I. Hynieimster sacculatus, Sladen ; abactinal aspect, with marsupial 

 tent in centre ; slightly enlarged. Fig. 2. PytJtonaster murrayi, Sladen ; abac- 

 tinal aspect ; x |. Fig. 3. PorccUanaster cceridens, Thorns. ; abactinal aspect ; 

 nat. size. Fig. 4, Psoitis ephippifer, Thorns. ; showing plates of dorsal mar- 

 supium ; x 3. 



