2. Archiphormis campanulata, n. sp.
Shell campanulate, with nine prominent denticulate ribs, prolonged into nine terminal feet, which are broad, lamellar, truncate, nearly vertical, one-third as long as the shell. Pores between the ribs circular, disposed in nine longitudinal and seven to eight transverse rows.
Dimensions.—Shell 0.09 long, 0.1 broad; mouth 0.06 broad.
Habitat.—Central Pacific, Station 270, depth 2925 fathoms.
3. Archiphormis urceolata, n. sp. (Pl. [98], fig. 11).
Shell urceolate, with nine smooth prominent curved ribs, prolonged into nine triangular convergent short feet, scarcely one-sixth as long as the shell. Pores between the ribs in nine regular longitudinal rows, twice or three times as broad as long, quadrangular, eight to twelve pores in each row. Mouth constricted, half as broad as the shell.
Dimensions.—Shell 0.13 long, 0.11 broad; mouth 0.06 broad.
Habitat.—Central Pacific, Station 266, depth 2750 fathoms.
Genus 519. Halicalyptra,[[136]] Ehrenberg, 1847, Monatsber. d. k. preuss. Akad. d. Wiss. Berlin, p. 54 (sensu emendato).
Definition.—Archiphormida (vel Monocyrtida multiradiata aperta) without radial ribs in the wall of the campanulate or ovate shell. Mouth with a coronet of radial feet. Apex with a horn.