1. Hagiastrum buddhae, n. sp. (Pl. [45], fig. 5).
Cross rectangular. Both longitudinal arms of equal size, twice as long as the transverse arms; all arms smooth, club-shaped, twice as broad at their globose distal part as at their base, each with three large conical terminal spines.
Dimensions.—Radius of the principal arms 0.4, of the lateral arms 0.2; basal breadth 0.06, distal breadth 0.12.
Habitat.—Indian Ocean, Belligemma, Ceylon, surface, Haeckel.
2. Hagiastrum bramae, n. sp.
Cross rectangular. Both longitudinal arms of equal size, one and a half times as long as the transverse arms; all arms thorny, club-shaped, at their pear-shaped distal part three times as broad as at their base, provided with numerous conical spines, one larger terminal spine at their distal point. (Resembles Stauralastrum rhopalophorum, Pl. [45], fig. 1, but is distinguished by the different size of the arm-pairs, and by the stronger spines.)
Dimensions.—Radius of the principal arms 0.3, of the lateral arms 0.2; basal breadth 0.04, distal breadth 0.12.
Habitat.—Indian Ocean, off Maldive Islands, surface, Haeckel.
Subgenus 2. Hagiastromma, Haeckel.
Definition.—The two longitudinal arms different in size or form.