Mathilda coronata Monterosato, 1875

Fig. 17 d–g

Mathilda coronata Monterosato, 1875 [b] (p. 12).

Mathilda coronata, Monterosato—Kobelt 1905 (p. 68).

Mathilda coronata Monterosato, 1875 —Sabelli & Spada 1978[a] (p. 1, fig. 4); Repetto et al. 2005 (p. 226, mid right fig.); Peñas et al. 2006 (figs. 253, 293).

Diagnostic characters. Turreted shell; angular teleoconch whorls; rounded aperture; numerous axial riblets crossed by four spiral cords forming nodules at the intersections; spiral cord 3 (from adapical) strongest, forming pronounced angulation and periphery; non-nodulose spirals on base. Protoconch: heterostrophic, heliciform, transaxial; 2.75 whorls; diameter about 440 µm; surface smooth; transition to the teleoconch marked by a very thin varix.

Occurrence. Box-corer samples BC05 (1 specimen), BC66 (1), BC67 (2), BC71 (11), BC72 (4); core BC51 (1). Maximum height: 8 mm.

Distribution and habitat. Mathilda coronata appears to be endemic of the Mediterranean Sea, where it is found on bathyal soft bottoms, often in the vicinity of deep water coral banks (Kobelt 1905; Smriglio et al. 2007).

Fossil record. None recorded.