bo 
PLATE LXXIII. 
Figs. 1-3. CHIroNASTER CATAPHRACTUS, 0. sp. 
. Abactinal aspect ; magnified 3 diameters. 
. Actinal aspect ; magnified 3 diameters. 
. Adambulacral plates and adjacent portion of the actinal surface; magni- 
fied 15 diameters. 
Figs. 4-7. PERIBOLASTER FOLLICULATUS, 0. sp. 
. Abactinal aspect ; natural size. 
. Actinal aspect ; natural size. 
. A portion of the abactinal surface ; magnified 8 diameters. 
. Adambulacral plates and adjacent portion of the actinal surface; magni- 
fied 8 diameters. 
Page 
283 
465 
