PLATE XXIII. 



Page 

 FigS. 1-4. PoRCELLANASTER TtJBEROSUS, n. Sp. . . .140 



Fig. 1. Abactinal aspect ; magnified 3 diameters. 



Fip. 2. Actinal aspect ; magnified 3 diameters. 



Fig. 3. Profile view ; magnified 3 diameters. 



Fig. 4. Direct lateral view of a ray, in outline ; magnified 3 diameters. 



[For magnified details of this species see PL XXVII. figs. 13-16.] 



Figs. 5-7. Styracaster horridus, n. sp. . . .150 



Fig. 5. Abactinal aspect ; magnified 1^ diameters. 

 Fig. 6. Actinal aspect; magnified 1^ diameters. 

 Fig. 7. Direct lateral view of a ray ; magnified 1^ diameters. 



[For magnified details of tins species see PI. XXVII. figs. 17-20.] 



