Purpuroidea lapierrea (Buvignier, 1843)

Plate 10: figs 10, 11

1886–1888 Purpuroidea gracilis n. sp. – Loriol in Loriol and Bourgeat: 60, pl. 4, figs 2–3.

1893 Purpuroidea lapierrea Buvignier – Loriol in Loriol and Lambert: 15, pl. 1, fig. 7.

1913 Purpuroidea gracilis (De Loriol) – Cossmann: 183, pl. 11, figs 1–2; fig. 44.

2022 Purpuroidea lapierrea (Buvignier, 1843) – Gründel, Hostettler and Menkveld-Gfeller: 55, pl. 9, figs 11–14, pl. 10, figs 1–5 (here more chresonymy and synonymy).

Material.

2 specimens, SNSB-BSPG 2016 XXI 1857 –1858.

Description.

Shell globular turbiniform with gradate spire; illustrated specimen (probably juvenile) 30 mm high; spire high, slender for the genus; last preserved whorl distinctly higher than spire; earliest preserved whorls convex, without visible ornament; early whorls with subsutural concavity that rapidly widens into distinct ramp in later whorls; several weak spiral cords can be seen on one specimen; shoulder of ramp with distinct nodes on last two preserved whorls; nodes rapidly enlarging, becoming almost thorn-like; nodes terminate adapically and abapically in bulging, ill-defined axial ribs; transition from whorl face to strongly convex base evenly rounded; faint lirae are visible in places, probably originally covering entire surface of the shell; aperture unknown.

Remarks.

The information about Purpuroidea lapierrea regarding the insertion of the nodes on the shoulder and the formation of a spiral sculpture varies in the literature.