PLATE XXV. 
o Figs. 1-3. HyPHALASTER PLANUS, 0. sp. . ca is ars 
Bigs 1. Abactinal aspect ; magnified 2 diameters. 
“a ; Fig. 2. Actinal aspect; magnified 2 diameters. Tv ; 
ee Fig. 3. Profile view; magnified 2 diameters. 
bet ; 
at [For magnified details of this species see Pl. XXVIII. figs 9-12. ] 
i Figs. 4-6. HyPHALASTER INERMIS, n. sp. < Nie 162, ae 
ashe i 
4 : te Fig. 4. Abactinal aspect; magnified 3 diameters. 
Bey ; 
an « Fig. 5. Actinal aspect ; magnified 3 diameters. 
* : 
Fig. 6. Profile view ; magnified 3 diameters, 
[For magnified details of this species see Pl. XXVIII. figs. 5-8. | 
