Dimensions.—Shell 0.08 long, 0.11 broad; feet 0.2 to 0.3 long.
Habitat.—South Atlantic, Station 335, depth 1425 fathoms; also fossil in Barbados.
2. Brachiospyris diacantha, n. sp. (Pl. [95], fig. 5).
? Ceratospyris diacantha, Ehrenberg, 1872, Monatsber. d. k. preuss. Akad. d. Wiss. Berlin, p. 303.
Shell nut-shaped, tuberculate, compressed in the sagittal axis, convex on the frontal face, concave on the sagittal face, with a slight sagittal stricture; with large irregular roundish pores. Basal plate with three very large pores. Two feet cylindrical, curved, S-shaped, about twice as long as the shell.
Dimensions.—Shell 0.06 long, 0.09 broad; feet 0.1 to 0.15 long.
Habitat.—Western Tropical Pacific (Philippine Sea), Station 206, depth 2100 fathoms.
Genus 447. Dendrospyris,[[65]] Haeckel, 1881, Prodromus, p. 441.
Definition.—Zygospyrida with two free lateral feet, forked or branched like a tree. Apex with a horn.
The genus Dendrospyris differs from its ancestral form Dipospyris in the ramification of the two large lateral feet, which descend from the base of the shell, and are usually very large and stout, sometimes simply forked.