Caecum egenum Vannozzi, 2017

(Fig. 3B)

Caecum egenum Vannozzi, 2017: 127, fig. 2G-J, N.; 2019b: 78.

TYPE MATERIAL. — Holotype. Philippines • lv; Balicasag; depth 10-15 m; MNHN-IM-2000-33078.

TYPE LOCALITY. — Pacific Ocean, Philippines, Balicasag, depth 10- 15 m.

MATERIAL EXAMINED. — Mayotte • 1 dd; Mozambique Channel, W Mayotte, BIOMAGLO Stn DW4854; 12°56’S, 44°58’E; 455- 465 m depth; 4.II.2017; MNHN .

DISTRIBUTION. — Known from Mayotte, Papua New Guinea and Philippines (Vannozzi 2017; 2019b). This is the first record for Indian Ocean.

DIAGNOSIS. — Shell small for the genus, colourless, smooth. Tube subcylindrical adapically, cylindrical in the middle and contracted toward the aperture, with a slight swelling in the ventral side. Aperture simple ending with a reflected lip. Septum dome shaped with an ear-like mucro rotated toward the right side. Length 1.5 mm.

REMARKS A single shell was found in the material from BIOMAGLO Expedition. No differences could be observed with respect to the holotype.