Triphora virginalis Thiele, 1925

Albano, Paolo G. & Bakker, Piet A. J., 2016, Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Museum fuer Naturkunde, Berlin, with lectotype designations, Zoosystematics and Evolution 92 (1), pp. 33-78 : 62-63

Taxon classification Animalia Caenogastropoda Triphoridae

Triphora virginalis Thiele, 1925 Figure 30

Triphora virginalis Thiele, 1925: 304 (270), plate XXII (X), figure 29.

Type specimens.

Holotype: ZMB/Moll no. 108518, fixed by monotypy.

Type locality.

Padang (Sumatra) [Indonesia].

Original description.

Die einzige weiße Schale scheint zu keiner bekannten Art zu gehören, leider fehlt die Spitze; ein Rest der bräunlichen Embryonalschale zeigt, daß die Windungen einen Mittelkiel und herablaufende Fäden haben. Die folgenden 8 Windungen haben zuerst 2 Knotenreihen, zwischen denen sich dann eine dritte ausbildet, die Knötchen sind rundlich, erhoben, senkrecht übereinander gelegen. Die letzte Windung hat untern 2 deutliche und einen schwächeren Reifen. Spindelfortsatz ziemlich kurz und breit. Die Form der Schal ist walzig kegelförmig, die Windungen bedeutend breiter als hoch, zuletzt kaum zunehmend. Höhe etwa 3,5 mm, Durchmesser 1 mm.

Translation.

The single white shell does not seem to belong to any described species, unfortunately it lacks the top; only a small part of the brown protoconch is visible, the whorl has a single keel and axial riblets. The following 8 whorls have on the upper whorls two rows of tubercles and between them a third appears; the tubercles are rounded, raised, located vertically one above the other. The last whorl has on the underside two conspicuous spiral cords and an obsolete one. Siphonal canal short and wide. The shell has a more or less conical shape, the whorls are considerably wider than high, the last whorl is barely larger in size than the previous one. Height about 3.5 mm, diameter 1 mm.

Diagnosis.

Holotype height 3.2 mm. Shell conical with flat sides. Teleoconch of seven whorls, which have three tubercled spiral cords. The first two are well visible since the first teleoconch whorl, while a third appears later between the two main cords: it is initially a fine thread on the third whorl, and is fully developed on fifth whorl. The last whorl has a fourth weakly tubercled spiral cord, and the base has two further smooth cords. Only the last whorl of the protoconch is present in the holotype, but it is clearly multispiral and bears a single spiral keel and several axial riblets. Colour white, the visible protoconch whorl is light brown.