Habitat.—Central Pacific, Station 271, depth 2425 fathoms.
2. Phormocampe lamprocyclas, n. sp. (Pl. [77], fig. 16).
Shell conical, with three internal annular septa. Length of the four joints = 1 : 1 : 3 : 4. Cephalis subspherical, as large as the thorax, with a stout, pyramidal horn of three times the length, bearing at the apex a spinulate knob. The fourth joint is the broadest, and has large, circular, hexagonally-framed pores, two to three times as broad as the circular pores of the three first joints. Peristome with a double coronal of short, conical, divergent feet, nine on each coronal.
Dimensions.—Length of the shell (with four joints) 0.16, breadth 0.11. Length of the single joints, a 0.02, b 0.02, c 0.05, d 0.07.
Habitat.—Central Pacific, Station 272, depth 2600 fathoms.
3. Phormocampe eucalyptra, n. sp. (Pl. [77], fig. 14).
Shell flatly conical, somewhat broader than long, with four internal annular septa. The four joints increase gradually in length and breadth. Pores subregular, hexagonal. Cephalis hemispherical, with two small, divergent horns. Peristome with a coronal of thirty to forty short, conical, divergent feet.
Dimensions.—Length of the shell 0.14, breadth 0.17. Length of the single joints, a 0.02, b 0.03, c 0.04, d 0.05.
Habitat.—North Pacific, Station 241, depth 2300 fathoms.
4. Phormocampe metalis, n. sp.