PLATE XXVI. 



Page 



Figs. 1-6. Hyphalaster hyalinus, n. sp. 156 



Fig. 1. Abactinal aspect ; magnified 3 diameters. 



Fig. 2. Actinal aspect ; magnified 3 diameters. 



Fig. 3. Profile view ; magnified 3 diameters. 



Fig. 4. Abactinal aspect of a young example ; magnified 4 diameters. 



Fig. 5. Actinal aspect of a young example ; magnified 4 diameters. 



Fig. 6. An embryonic abactinal plate ; magnified 54 diameters. 



[For magnified details of this species see PI. XXVIII. figs. 13-16.] 



