Shell nut-shaped, tuberculate, with slight sagittal stricture and irregular, polygonal pores. Basal plate with four large pores (?). Apical horn straight, conical, longer than the two curved lateral horns. Feet ten, slender, S-shaped, widely divergent, about as long as the shell is broad. _Dimensions._--Shell 0.05 long, 0.08 broad; horns 0.03 to 0.05 long, feet 0.08 long. _Habitat._--Mediterranean (Messina), Atlantic, Station 354, surface. 5. _Anthospyris aculeata_, n. sp. (Pl. 86, fig. 5). Shell campanulate, spiny, with deep sagittal stricture and irregular, roundish pores. On each side of the stricture three pairs of larger annular pores. Basal plate with two large square pores. The three horns of the same size as, and similar form to, the ten to fifteen feet, slender pyramidal, straight, divergent, about half as long as the shell. (This species is very variable and closely allied to _Ceratospyris_.) _Dimensions._--Shell diameter 0.08 to 0.12; horns and feet 0.04 to 0.06 long. _Habitat._--Central Pacific, Stations 266 to 274, surface. 6. _Anthospyris doronicum_, n. sp. (Pl. 87, fig. 18). Shell nut-shaped, spiny, with a deep sagittal stricture and small circular pores. On each side of the stricture two pairs of very large square annular pores. Basal plate with four larger collar {1066}pores and a corona of numerous small peripheral pores. Three horns spindle-shaped, divergent, about half as long as the shell. Feet twenty-five to thirty, broad, lamellar, lanceolate, pointed, divergent, nearly as long as the shell. _Dimensions._--Shell 0.1 long, 0.13 broad; horns 0.06, feet 0.09 long. _Habitat._--South Pacific, Station 296, depth 1825 fathoms. 7. _Anthospyris tragopogon_, n. sp. (Pl. 87, fig. 17). Shell nut-shaped, tuberculate, with distinct sagittal stricture and small regular circular pores. Basal plate with numerous small pores. Apical horn very large, spindle-shaped, twice as long as the shell; frontal horns small, scarcely one-fourth as long, curved laterally. Feet twenty-five to thirty, three to four times as long as the shell, lamellar, lanceolate, pointed, parallel, vertical. _Dimensions._--Shell 0.08 long, 0.11 broad; apical horn 0.16, feet 0.2 long. _Habitat._--Central Pacific, Stations 265 to 268, depth 2700 to 2900 fathoms. Genus 465. _Ceratospyris_,[83] Ehrenberg, 1847, Monatsber. d. k. preuss. Akad. d. Wiss. Berlin, p. 54. _Definition._--#Zygospyrida# with numerous (seven to twelve or more) basal feet and numerous coryphal horns.