Triphoris (Mastonia) ruber Hinds, 1843

Albano, Paolo G., Bakker, Piet A. J. & Sabelli, Bruno, 2019, Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Natural History Museum of the United Kingdom, London, Zoosystematics and Evolution 95 (1), pp. 161-308 : 161

Triphoris (Mastonia) ruber Hinds, 1843

Figure 36

Triphoris (Mastonia) ruber Hinds 1843b: 19-20, not illustrated. Illustration available in Hinds (1844): 30, pl. 8, fig. 15.

Type locality.

"New Ireland" [Papua New Guinea].

Type material.

Syntypes: NHMUK 1844.6.7.22-26: 5 specimens, New Ireland (coll. E. Belcher) ; NHMUK 1879.2.26.192/1-5: 5 specimens, New Ireland and Straits of Malacca (J. Lombe Taylor coll.) .

Original description.

Testa rufa; anfractibus undecim biseriatim granulosis, seriebus subdistantibus suturam obtegentibus; apertura rotundata; sinu laterali margine contracto. Axis 4 lin.

Geog. New Ireland; numerous among fine gravel at low water. Straits of Malacca; in 20 fathoms.

Its reddish colour and double series of tubercles will readily distinguish this shell. In some of the specimens, a small intermediate series is about to make its appearance on the one or two inferior whorls.

Translation of the Latin text.

Shell red; 11 whorls with two granulated threads, lower series covering the suture; aperture rounded; sinus on the peristome with contracted edges. Height 4 lines.

Diagnosis.

Syntype NHMUK 1844.6.7.22 (Fig. 36A-H ) 5 mm high. Shell conical and broad. Teleoconch of 12 flat whorls bearing two large cords with tubercles at the interstices with opisthocline axial ribs. A third spiral cord is visible on the last whorl as a fine smooth thread just below the first cord. The base bears two additional weakly tuberculated cords. In between the main sculpture, fine numerous finely tuberculated spiral cords are visible. The peristome has a deep posterior sinus and fine additional spiral cords. Siphonal canal short. Protoconch multispiral, of four whorls; the first has spherical tubercles, while the others bear two spiral keels and axial riblets. Teleoconch pink to light violet, with lighter tubercles. Protoconch brown. Operculum horny, rather thin, ovate, multispiral of about 4½ whorls, nucleus a little eccentric, periphery thin and only a little upturned.

Figures

Figure 36. Triphoris ruber Hinds, 1843. A-H Lectotype NHMUK 1844.6.7.22, New Ireland (coll. E. Belcher): front (A, B), side (C, D), back (E), peristome (F, G), operculum (H). I Paralectotype, NHMUK 1844.6.7.23, New Ireland (coll. E. Belcher): front (I). J-M, Q Paralectotype, NHMUK 1879.2.26.192, New Ireland and Straits of Malacca (J. Tomble Taylor coll.): front (J), protoconch (K-M), original labels (Q). N Figure in Hinds 1844. O-P Original labels lot NHMUK 1844.6.7.22 - 26. Scale bars: A-E: 1 mm; F, G: 0.5 mm; H: 0.3 mm; K, L: 0.1 mm; M: 0.05 mm.