_Habitat._--Central Pacific, Station 265, depth 2900 fathoms. 2. _Gamospyris annulus_, n. sp. Shell nut-shaped, tuberculate, with subregular circular pores. Basal plate with four large central and a circle of eight to twelve small peripheral pores. Apical horn conical, twice as long as the shell. The connected arms form together an elliptical smooth ring, which is five times as long and three times as broad as the shell. _Dimensions._--Shell 0.07 long, 0.09 broad; ring 0.33 long, 0.26 broad. _Habitat._--Central Pacific, Station 268, depth 2900 fathoms. Genus 450. _Stephanospyris_,[68] Haeckel, 1881, Prodromus, p. 441. _Definition._--#Zygospyrida# with two lateral feet bearing a series of secondary spines and forming a ring by union. The genus _Stephanospyris_ exhibits the same peculiar armature of the semipinnate lateral feet as its ancestral genus _Dorcadospyris_, but differs from it in the concrescence of the distal ends of the feet, to form a complete foot-ring. The former therefore bears to the latter the same relation that _Gamospyris_ does to _Dipospyris_. 1. _Stephanospyris cordata_, n. sp. (Pl. 85, fig. 10). Shell subspherical, tuberculate, with small regular circular pores. Basal plate with four larger pores. Apical horn cylindrical, three times as long as the shell, with three to four verticils {1043}of teeth. The connected feet form a heart-shaped ring, four times as long and three times as broad as the shell. Each foot bears on the outer convex edge four to six stout conical teeth, shorter than the shell. Distal ends crossed and prominent. _Dimensions._--Shell diameter 0.1; length of the arm-ring 0.4, breadth 0.3. _Habitat._--Central Pacific, Station 265, depth 2900 fathoms. 2. _Stephanospyris verticillata_, n. sp. (Pl. 85, fig. 11). Shell nut-shaped, tuberculate, with subregular circular pores. Basal plate with numerous small pores. Apical horn cylindrical, four to six times as long as the shell, with six to ten verticils of teeth. The connected feet form a circular ring, the diameter of which is four times as great as that of the shell. Each foot bears ten to twelve conical teeth, about as long as the shell. Distal ends not crossed and not prominent. _Dimensions._--Diameter of the shell 0.1, of the arm-ring 0.4. _Habitat._--Central Pacific, Station 266, depth 2750 fathoms. 3. _Stephanospyris excellens_, n. sp. (Pl. 83, fig. 20). Shell subspherical, tuberculate, with regular circular pores. Basal plate with numerous small pores. Apical horn cylindrical, twice as long as the shell, with eight verticils of teeth. The connected feet form an ovate ring, which is three times as long and two and a half times as broad as the shell. Each foot bears eight conical spinulate teeth, about as long as the shell. The crossed and prominent distal ends bear two parallel vertical teeth. _Dimensions._--Diameter of the shell 0.1, of the arm-ring 0.2 to 0.3. _Habitat._--Central Pacific, Station 268, depth 2900 fathoms.