Coralliophila mitraeforma Kosuge, 1985 (Fig. 5A, B)

Coralliophila mitraeforma Kosuge, 1985: 56, pl. 21, figs 1, 2.

TYPE MATERIAL. — Holotype (IMT 85-21; not examined; figured by Higo et al. [2001: 66, G2401]).

TYPE LOCALITY. — Mactan, Cebu, Philippines.

MATERIAL EXAMINED. — BENTHAUS, stn DW 1948, Banc Lotus, 23°48.7’S, 147°53.5’W, 120-280 m, 1 lv (Fig. 5A, B).

DISTRIBUTION. — Pacific Ocean, from off Danjo Islands, Western Kiūshū (Higo et al. 1999: 217; Tsuchiya 2000), to the Philippines and the New Caledonia area, alive in 245-400 m (Oliverio 2008b). Austral Islands, alive in 120- 280 m.

REMARKS

The protoconch, partly eroded, of the single specimen, is concordant in the general aspect with the known protoconchs of this species, indicating a planktotrophic larval development. C. mitraeforma is very similar to C. solutistoma Kuroda & Shikama, 1966, differenciation relying on its higher ratio total height/apertural height (h/a).