bo 
PLATE LXXV. 
Page 
Figs. 1-4. RETASTER PEREGRINATOR, 0. sp... ; : 479 
. Abactinal aspect ; natural size. 
. Actinal aspect ; natural size. 
. A portion of the supradorsal membrane; magnified 10 diameters. 
. Adambulacral plates and adjacent portion of the actinal surface ; magnified 
5 diameters. 
Figs. 5, 6. PTERASTER SEMIRETICULATUS, 1. sp. : . . 465 
. Abactinal aspect; magnified 3 diameters. 
. Actinal aspect ; magnified 3 diameters. 
[For magnified details of this species see Pl. LX XVII. figs. 5, 6.] 
