Triphoris (Sychar) vitreus 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 (Sychar) vitreus Hinds, 1843

Figure 39

Triphoris (Sychar) vitreus Hinds 1843b: 19, not illustrated. Illustration available in Hinds (1844): 30, pl. 8, fig. 12.

Type locality.

Straits of Malacca.

Type material.

Syntypes: NHMUK 1879.2.26.210: 1 specimen, Straits of Malacca (J. Lombe Taylor coll.) .

Original description.

Testa pellucida; anfractibus quindecim laevigatis rotundatis, lineis duabus elevatis cinctis; apice mamillari; apertura subquadrata; sinu laterali patulo. Axis 4½ lin.

Geog. Straits of Malacca; dredged from 20 fathoms. One of the elevated lines traverses the whorl about its centre; the other, not at first very apparent, will be found on its lower surface near the suture.

Translation of the Latin text.

Transparent shell; 15 rounded whorls, smooth, surrounded by two lines; apex mamillated; aperture subquadrate; open posterior sinus. Height 4½ lines.

Diagnosis.

Syntype 8.7 mm high. Conical shell with 12 slightly convex whorls with numerous prosocline growth lines and two deep spiral grooves. Very fine spiral threads are also visible. Base smooth. Peristome with no clear posterior sinus, siphonal canal short. Protoconch paucispiral with one large smooth whorl. Shell colour yellowish-white.

Figures

Figure 39. Triphoris vitreus Hinds, 1843, Straits of Malacca, J. Lombe Taylor coll. A-G, I-L Syntype NHMUK 1879.2.26.210: front (A, B), side (C, D), back (E), protoconch (F, G), peristome (I, J), microsculpture (K), original lables (L). H Figure in Hinds 1844. Scale bars: A-E: 1 mm; F, G: 0.3 mm; I-K: 0.5 mm.