PLATE LXXX. 
Figs. 1-5. HymenasTer PELLUcIDUS, Wyville Thomson, . 
. Abactinal aspect ; magnified 3 diameters. 
. Actinal aspect; magnified 3 diameters. 
. A portion of the supradorsal membrane ; magnified 20 diameters. 
. Adambulacral plates and adjacent portion of the actinal surface ; magni- 
fied 18 diameters. 
. Mouth-plates ; magnified. 
Figs. 6-9. KorETHRASTER HISPIDUS, Wyville Thomson, 
. Abactinal aspect ; magnified 4 diameters. 
. Actinal aspect; magnified 4 diameters. 
. A portion of the abactinal surface ; magnified 24 diameters. 
. Adambulacral plates and adjacent portion of the actinal surface; magni- 
fied 35 diameters. 
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