PLATE LXXIV. 
Figs. 1, 2. PTERASTER STELLIFER, 0. sp. 
. Abactinal aspect ; magnified 1} diameters. 
. Actinal aspect ; magnified 14 diameters. 
[For magnified details of this species see P]. LX XVII. figs. 1, 2. ] 
Figs. 3, 4. PTERASTER RUGATUS, 0. sp. . 
. Abactinal aspect ; magnified 3 diameters. 
. Actinal aspect ; magnified 3 diameters. 
[For magnified details of this species see Pl. LX XVII. figs. 3, 4.] 
Figs. 5, 6. RETASTER GIBBER, D. sp. . 
. Abactinal aspect ; magnified 2 diameters. 
. Actinal aspect ; magnified 2 diameters, 
[For magnified details of this species see Pl. LXXVII. figs. 7, 8.] 
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