Caecum cf. mauritianum de Folin, 1868

Vannozzi, Angelo, 2023, The Caecidae from BIOMAGLO Expedition in the Mayotte-Glorieuses area (Mollusca, Gastropoda), Zoosystema 45 (12), pp. 421-434 : 430

publication ID	https://doi.org/ 10.5252/zoosystema2023v45a12
publication LSID	lsid:zoobank.org:pub:5EB87A24-068B-40F3-B76B-79E4F48C478A
DOI	https://doi.org/10.5281/zenodo.8183528
persistent identifier	https://treatment.plazi.org/id/03A4967B-FFDA-FFD0-B2AC-FF0FF2539283
treatment provided by	Felipe
scientific name	Caecum cf. mauritianum de Folin, 1868
status

Treatment

Caecum cf. mauritianum de Folin, 1868 View in CoL

( Fig. 3 View FIG C-E)

Caecum mauritianum de Folin, 1868: 84 View in CoL , pl. 9, figs 8, 9.

TYPE MATERIAL. — Holotype. Mauritius • dd; Mauritius; MNHN-IM-2000-24911 . Paratype. Mauritius • 1 dd worn; same data as for holotype; MNHN-IM-2000-24912 .

TYPE LOCALITY. — Indian Ocean , Mauritius.

MATERIAL EXAMINED. — Mayotte • 1 dd worn; Mozambique Channel , S Mayotte, BIOMAGLO Stn DW4820; 13°05’S, 45°06’E; 295-336 m depth; 27.I.2017; MNHN GoogleMaps .

DISTRIBUTION. — Described from Mauritius, it was reported from New Caledonia ( Pizzini et al. 2013).

DIAGNOSIS. — Shell of average size for the genus. Tube subcylindrical, smooth or with ill-defined very small rings. Aperture slightly inclined, preceded by a narrow varix-like swelling. Septum narrow, dome-shaped with a dorsal nail-like mucro slightly rotated towards the right. Length 2.5 mm.

REMARKS

A single, rather worn shell was found in the available material, on the whole in agreement with de Folin’s description and drawing, but not very well fitting the type specimens. In fact, the holotype and the paratype of C. mauritianum , shown in Figure 3D, E View FIG , are smaller and less curved with more pointed mucro. For this reason, its identification of the specimen from Mayotte is tentative. The relationship between this species and C. sericeum de Folin, 1873 , described from Mayotte, needs to be re-evaluated based on additional material.