PLATE XVII. 
Page 
Figs. 1, 2. APHRODITASTER GRACILIS, 0. sp. i 3 2 
. Abactinal aspect; magnified 2 diameters. 
. Actinal aspect ; magnified 2 diameters. 
[For magnified details of this species see Pl. XVIII. figs. 7, 8. | 
Figs. 3, 4. PSEUDARCHASTER TESSELLATUS, 1. Sp. . . ok alae 
. Abactinal aspect ; magnified 15 diameters. 
. Actinal aspect; magnified 14 diameters. 
[For magnified details of this species see Pl. XVIII. figs. 9-10. | 
Figs. 5-7. CRASPIDASTER HESPERUS, Miiller and Troschel, sp. . 5 Gy, 
. Abactinal aspect ; magnified 2 diameters. 
. Actinal aspect ; magnified 2 diameters. 
. Diagram of the actinal intermediate plates of an example from Hong 
Kong; magnified 2 diameters. 
| For magnified details of this species see Pl. XVIII. figs. 1-4. | 
