Leptomaria phacoides Zittel 1873

Leptomaria phacoides Zittel, 1873 Plate 2: figs 3–5 ? 1844 Trochus iurensis Hartmann – Goldfuss: 57, pl. 180, fig. 12. * 1873 Pleurotomaria (Leptomaria) phacoides n. sp. – Zittel: 335, pl. 50, fig. 1. ? 1907 Leptomaria umbilicata n. sp. – Sieberer: 61, pl. 5, fig. 9. 1997 Leptomaria phacoides Zittel – Hägele: 33, pl. 5, fig. 1, fig. p. 33 upper middle. 2013 Leptomaria phacoides Zittel – Monari and Gatto: 821, fig. 8 Q. Material. 1 specimen SNSB – BSPG 2016 XXI 1629 and 1 cast of an impression SNSB – BSPG 2016 XXI 1630 (the impression itself is lacking). Description. Shell low trochiform, with low whorls; specimen 41 mm wide; suture shallow; selenizone indistinct apparently at mid-whorl on last whorl, and suprasutural on spire whorls with a bulge below it; whorls with faint remains of spiral ornamentation; base flat, demarcated from whorl face by rounded edge, widely phaneromphalous; base without visible ornamentation except for indistinct growth lines; aperture not preserved. Remarks. Leptomaria chryseis Laube sensu Gründel (2012) and Monari and Gatto (2013) has an ornament of spiral and axial ribs on the early teleoconch whorls, its whorls are more convex and the sutures are more distinct. Pleurotomaria onion d’Orbigny sensu Loriol in Loriol and Bourgeat (1886–1888) lacks ornamentation and its umbilicus is wider. Pleurotomaria cfr. philea d’Orbigny sensu Schlosser (1882) has more convex whorls, deeper sutures, and lacks an abapical bulge and furrow. Pleurotomaria umbilicata Sieberer, 1907 is maybe identical with Leptomaria phacoides but has a weak cancellate ornament of spiral cords and axial ribs.