Definition.—Horns and feet forked or branched.
10. Triceraspyris damaecornis, n. sp.
Shell nut-shaped, smooth, compressed, with broad sagittal ring. Pores irregular roundish; one pair of very large pores on each side of the ring. Basal plate with four large collar pores. Three horns and three feet short, divergent, slightly curved, about half as long as the shell, irregularly branched. (In general form very similar to Elaphospyris damaecornis, Pl. [84], fig. 10, with which I formerly confounded it.)
Dimensions.—Shell 0.08 long, 0.12 broad; horns and feet 0.04 long.
Habitat.—South Pacific, Station 295, depth 1500 fathoms.
11. Triceraspyris arborescens, n. sp.
Shell subspherical, with deep sagittal stricture. Pores irregular roundish; three pairs of larger pores on both sides of the ring. Basal plate with two large collar pores. Three horns about half as long as the shell, with few irregular terminal branches. (Beginning of a cupola.) Three feet strong, cylindrical, twice as long as the shell, richly branched, arborescent.
Dimensions.—Shell 0.09 long, 0.1 broad; horns 0.05 long, feet 0.2 long.
Habitat.—Indian Ocean (Madagascar), Rabbe, surface.