Definition.—Feet of the peristome-corona convergent, their basal distance greater than their terminal distance.
9. Anthocyrtis enneaphylla, n. sp.
Shell smooth, with sharp collar stricture. Length of the two joints = 1 : 6, breadth = 1 : 5. Cephalis subspherical, with a conical horn twice the length, nearly hyaline, with very small and scarce pores. Thorax nearly spherical, with regular, circular, quincuncial pores. Mouth only half as broad, with nine broad, triangular feet, twice as long as the cephalis, and curved inwards, convergent towards the main axis.
Dimensions.—Cephalis 0.02 long, 0.025 broad; thorax 0.11 long, 0.12 broad.
Habitat.—South Atlantic, Station 332, depth 2200 fathoms.
10. Anthocyrtis ovata, n. sp. (Pl. [62], fig. 13).
Shell smooth, with slight collar stricture. Length of the two joints = 1 : 5, breadth = 1 : 3. Cephalis ovate, with numerous small pores, and an excentric conical horn of the same length. Thorax ovate, with regular, circular, quincuncial pores. Mouth nearly of the same breadth, scarcely constricted, with nine triangular, widely-separated feet, about as long as the cephalis, and convergent towards the main axis.
Dimensions.—Cephalis 0.035 long, 0.03 broad; thorax 0.15 long, 0.1 broad.
Habitat.—Central Pacific, Station 272, depth 2600 fathoms.