4. Gazelletta cyrtonema, n. sp. (Pl. [120], fig. 9).

Shell hat-shaped, thorny. Feet cylindrical, smooth, widely diverging at the base, strongly curved and convergent in the distal part, often semicircular, without terminal branches.

Dimensions.—Diameter of the shell 0.11 to 0.13, length of the feet 0.4 to 0.6.

Habitat.—North Atlantic, Station 354, Canary Islands, surface.

Subgenus 2. Gazellidium, Haeckel.

Definition.—Feet smooth, without lateral spines, but branched at the distal end, or with a bunch of terminal spines.

5. Gazelletta furcata, n. sp.

Shell flat, cap-shaped, smooth. Feet cylindrical, nearly straight, at the distal end forked, with two divergent, spinulate, terminal branches.

Dimensions.—Length of the shell 0.12, breadth 0.3; length of the feet 0.6 to 0.8.

Habitat.—Western Tropical Pacific, Station 224, surface.