PLATE XCVII. 
Figs. 1, 2. PERKNASTER DENSUS, 0. Sp. : : 
. Abactinal aspect ; magnified 15 diameters, 
. Actinal aspect ; magnified 14 diameters. 
[For magnified details of this species see Pl, XCVIII. figs. 11, 12.] 
Figs. 3, 4. PERKNASTER FUSCUS, n. sp. 
. Abactinal aspect ; magnified 14 diameters. 
. Actinal aspect ; magnified 15 diameters, 
[For magnified details of this species see Pl. LXII. fig. 1.] 
Figs. 5, 6. CRIBRELLA SIMPLEX, 0. sp. 
. Abactinal aspect ; magnified 2 diameters. 
. Actinal aspect ; magnified 2 diameters. 
[For magnified details of this species see P]. XCVIII. figs. 9, 10. | 
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