Triphora subulata Thiele, 1930

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 : 59

Taxon classification Animalia Caenogastropoda Triphoridae

Triphora subulata Thiele, 1930 Figure 27

Triphora subulata Thiele, 1930: 577, plate IV, figure 34.

Type specimens.

Lectotype ZMB/Moll no. 67489a from Station 3, here designated. Paralectotype A: ZMB/Moll no. 67489b; further 16 paralectotypes (ZMB/Moll no. 67489).

Type locality.

"Sharks Bay, Stations 1, 3, 9, 12, 14, 16 und 20" [Western Australia].

Original description.

Einige Schalen aus der Sharks Bay (Station 1, 3, 9, 12, 14, 16 und 20) sind sehr spitz, mit etwa 16 sehr langsam zunehmenden Windungen, braun, auf den mittleren Windungen mit 2 Reihen starker, hellerer Perlknoten, zwischen denen sich auf der vorletzten Windung noch eine Reihe einschiebt, an der Unterseite der Endwindung sind 3 glatte Reifen vorhanden. Höhe der abgebildeten Schale 6,5 mm, Durchmesser 1,5 mm.

Translation.

Several shells from Shark Bay (stations 1, 3, 9, 12, 14, 16 and 20) are very pointy, with about 16 whorls which slowly increase in size, brown; on the middle whorls there are two rows of tubercles, light grey in colour; on the last whorls another row of tubercles develops between the first two, on the base three smooth threads are visible. Height of the figured shell 6.5 mm, diameter 1.5 mm.

Diagnosis.

Lectotype height 4.2 mm. Shell conical and quite slender. Teleoconch of 10 whorls, which have two main tubercled spiral cords. Between them, a third cord is visible as a fine thread at mid height, and then it develops into a spiral cord only on the last whorl. A very fine suprasutural cord is present, but barely visible. The last whorl has a fourth tubercled spiral cord, and the base has a single smooth cord. The peristome has a posterior siphonal canal. The protoconch is composed of five whorls: the first two whorls have granules and tiny axial threads near the suture, the other whorls have two spiral keels and axial riblets. Colour brown with grey granules.

Remarks.

No specimens of 6.5 mm height were found, notwithstanding it is stated that the illustrated specimen is this size. The only specimen of comparable size is a subadult (hence not the illustrated specimen) (here selected as paralectotype B), while the lectotype and the other adult specimens range around 4 mm.