Coralliophila mitraeforma Kosuge, 1985

Oliverio, Marco, 2009, Diversity of Coralliophilinae (Mollusca, Neogastropoda, Muricidae) at Austral Islands (South Pacific), Zoosystema 31 (4), pp. 759-789 : 770

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).

Figures

FIG. 5. — A, B, Coralliophila mitraeforma Kosuge, 1985, Banc Lotus, BENTHAUS, stn DW 1948, 23°48.7’S, 147°53.5’W, 120-280 m; C, D, C.pulchella (A.Adams,1854),Rimatara Is., BENTHAUS,stn DW 2020,22°37’S,152°49.1’W,920-930 m;E, C. suduirauti Smriglio & Mariottini, 2003, Banc Lotus, BENTHAUS, stn DW 1946, 23°49.2’S, 147°41.2’W, 100-200 m; F-H, Coralliophila sp. A, Banc Arago, BENTHAUS, stn DW 1970, 23°22’S, 150°43.2’W, 350-401 m. Scale bars: A-D, 10 mm; E-H, 5 mm.