TOSAPUSIA SAUTERNESENSIS

TOSAPUSIA SAUTERNESENSIS

( GUILLOT DE SUDUIRAUT, 1997) COMB. NOV.

FIGURE 6C View Figure 6

Vexillum (Costellaria) sauternesense Guillot de Suduiraut, 1997: 117 View in CoL , 118; figs 3, 4.

Type data

Holotype: MNHN IM-2000-30178, Philippines, Hilutangan channel between Mactan and Olango Island, 160 m, 42.2 mm.

Paratype: Collection Sandro Gori (formerly in collection Guillot de Suduiraut), same locality as holotype, 43.7 mm.

Material examined

Holotype.

Diagnosis

Shell medium sized, attaining 42.2 mm, elongate fusiform, with nine or ten slightly convex teleoconch whorls, high spire with straight spire outline and distinctly canaliculated suture. Protoconch unknown because of errosion. Penultimate whorl with 25 or 26 axial ribs, and last adult whorl with 30 or 31 strong axial ribs, intersected by, respectively, seven or eight and 13 or 14 spiral grooves, resulting in a slightly beaded appearance. Columella with four or five strong folds weakening towards moderately long, slightly curved siphonal canal. Columellar folds extended outside of aperture to form strong spiral cords with wide interspaces on the siphonal canal. Aperture elongate with crenulated outer lip. Shell colour white with a brown to orange band at abapical half of spire whorls and at periphery of last adult whorl, and a second faded band of same colour above siphonal fasciole; aperture cream white, periostracum transparent.

Distribution and habitat

Known from the Philippines: Bohol and the Mactan – Olango channel, at a depth of 160 m, on sand and coral rubble .

Remarks

Tosapusia sauternesensis has several distinguishing characters, allowing its easy recognition. Among them the presence of a distinct, although narrow, subsutural shelf, wide and strong axial ribs with deep, rather narrow, interspaces, and very widely set spiral cords on the abapical portion of the shell base.

TOSAPUSIA BISMARCKEANA SP. NOV. FEDOSOV, HERRMANN & BOUCHET

FIGURE 6D – F View Figure 6