PLATE LII. 



Page 



Figs. 1, 2. Pentagonaster arcuatus, n. sp. . . . 277 



Fig. 1. Abactinal aspect ; magnified 1t> diameters. 

 Fig. 2. Actinal aspect ; magnified 1^ diameters. 



[For magnified details of this species see PI. XVIII. figs. 5, 6.] 



Figs. 3, 4. Nymphaster bipunctus, n. sp. . . .301 



Fig. 3. Abactinal aspect ; magnified 2 diameters. 

 Fig. 4. Actinal aspect ; magnified 2 diameters. 



[For magnified details of this species see PI. LIII. figs. 11, 12.] 



Figs. 5-8. Gymnasteria carinifera (Lamarck), von Martens, . 357 



Fig. 5. Abactinal aspect of a young example ; magnified 2 diameters. 



Fig. 6. Actinal aspect of a young example ; magnified 2 diameters. 



Fig. 7. Adambulacral plates and adjacent portion of the actinal surface of the 

 same example ; magnified 10 diameters. 



Fig. 8. A portion of the abactinal surface of the same; magnified 10 diameters. 



