Triphora agulhasensis 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 : 34-35

Taxon classification Animalia Caenogastropoda Triphoridae

Triphora agulhasensis Thiele, 1925 Figure 2

Triphora agulhasensis Thiele, 1925: 128 (94), plate XXII (X), figure 17.

Type specimens.

Lectotype: ZMB/Moll no. 109268a, here designated. Paralectotype A: ZMB/Moll no. 109268b.

Type locality.

"Station 95 [Cap Agulhas]" (South Africa).

Original description.

Zwei Schalen von Station 95 sind der vorigen Art [ Triphora patricia ] zwar recht ähnlich, aber weniger schlank, die Kante der letzten Windung ist weniger scharf und darunter noch ein zweiter Reifen. Es sind etwa 9 Windungen vorhanden, deren erste wie bei der vorigen Art geformt und skulptiert sind, auch hier haben die folgenden 3 Körnerreihen und einen glatten Reifen. Dieser bildet bei der letzten Windung die untere Kante, die etwas stumpfwinklig ist, unter ihr sind noch 2 Reifen sichtbar. Spindelfortsatz mäßig lang, gerade, Mündung rautenförmig. Höhe 5 mm, Durchmesser 1,6 mm.

Translation.

Two shells from Station 95 are quite similar to the previous species [ Triphora patricia ], but less slender; the edge of the last whorl is less pronounced and even includes a second thread. There are about 9 whorls, which are initially shaped and sculptured as in the previous species, again having three rows of tubercles and a smooth thread. This forms on the last whorl an edge, which is somewhat obtuse, under this edge there are still two threads visible. Siphonal canal moderately long, straight; diamond-shaped aperture. Height 5 mm, diameter 1.6 mm.

Diagnosis.

Lectotype height 4.8 mm. Shell weakly conical; teleoconch with 5-6 whorls with three tubercled spiral cords and a fourth suprasutural, smooth cord. Two further smooth spiral cords on the base. Simple peristome, without bifurcating cords. Paucispiral large apex of 2-3 whorls; the transition to teleoconch is difficult to spot. The first protoconch whorl is ornamented by three strong smooth spiral cords; the two lower cords develop strong granules on the second whorl. Colour white.

Remarks.

The type lot contains three specimens. Two are conspecific and belong to Triphora agulhasensis ; a third one has strong tubercles on the first protoconch whorl instead of the smooth keels in Triphora agulhasensis , and does not belong to this species.