Shell hemispherical, papillate, with slight sagittal stricture and subregular circular pores. Basal plate with three large collar pores (by mistake not correctly represented in the figure). Ten to twelve slender feet, twice as long as the shell, strongly curved and divergent, of equal length.
Dimensions.—Shell 0.06 long, 0.08 broad; feet 0.1 long.
Habitat.—North Pacific, Station 241, depth 2300 fathoms.
2. Gorgospyris medusetta, n. sp. (Pl. [87], fig. 2).
Shell misshaped, smooth, with deep sagittal stricture and irregular, roundish pores. Basal plate with three large collar pores, alternating with three pairs of smaller pores. Sixteen to twenty slender feet, about as long as the shell, slightly curved and divergent, of nearly equal length.
Dimensions.—Shell 0.05 long, 0.08 broad; feet 0.05 long.
Habitat.—Central Pacific, Station 274, depth 2750 fathoms.
3. Gorgospyris ehrenbergii, Haeckel.
Petalospyris pentas, Ehrenberg, 1875, Abhandl. d. k. Akad. d. Wiss. Berlin, p. 80, Taf. xxii. fig. 11.
Shell nut-shaped, smooth, with slight sagittal stricture and unequal circular pores. Basal plate with three large central pores, alternating with three pairs of smaller pores, and with a peripheral circle of smaller pores. Twenty-four to thirty short truncated feet, shorter than half the shell.