12. Cenosphæra setosa, Ehrenberg.
Shell thin walled, covered with very short and numerous bristles. Pores regular, circular, five to six times as broad as the bars, six to eight on the quadrant.
Dimensions.—Diameter of the shell 0.17, pores 0.2, bars 0.03.
Habitat.—West Tropical Pacific, 3300 fathoms; Philippine Sea, Station 200, depth 250 fathoms.
13. Cenosphæra plutonis, Ehrenberg.
Shell thin walled, covered with short conical papillæ. Pores regular, circular, twice as broad as the bars, eight to nine on the quadrant.
Dimensions.—Diameter of the shell 0.09, pores 0.006, bars 0.003.
Habitat.—North Atlantic, Station 353, depth 2965 fathoms.
14. Cenosphæra proserpinæ, n. sp.
Shell thin walled, smooth. Pores regular, circular, four times as broad as the bars, five to six on the quadrant.
Dimensions.—Diameter of the shell 0.08, pores 0.008, bars 0.002.
Habitat.—Central Pacific, Station 265, depth 2900 fathoms.
15. Cenosphæra eridani, n. sp.
Shell thin walled, smooth. Pores regular, circular, three times as broad as the bars, eleven to twelve on the quadrant.
Dimensions.—Diameter of the shell 0.16, pores 0.01, bars 0.003.
Habitat.—South Pacific, Station 295, depth 1500 fathoms.
16. Cenosphæra lethe, n. sp.
Shell thick walled, smooth. Pores regular, circular, double-edged, five times as broad as the bars, sixteen to eighteen on the quadrant.
Dimensions.—Diameter of the shell 0.25, pores 0.01, bars 0.002.
Habitat.—North Atlantic, Station 64, depth 2700 fathoms.
17. Cenosphæra elysia, n. sp. (Pl. 12, fig. 8).
Shell thick walled, rough. Pores regular, circular, double-edged, twice as broad as the bars, twelve to fourteen on the quadrant.
Dimensions.—Diameter of the shell 0.2, pores 0.01, bars 0.005.
Habitat.—Central Pacific, Station 266, depth 2750 fathoms.
