Triphoris (Mastonia) castus 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) castus Hinds, 1843

Figure 23

Triphoris (Mastonia) castus Hinds 1843b: 20, not illustrated.

Type locality.

"St. Vincent’s”, Caribbean.

Type material.

Syntypes: NHMUK 196536: 1 specimen, and NHMUK 196537: 1 specimen, both St Vincent, Caribbean (J.E. Gray coll.) .

Original description.

Testa parva; anfractibus duodecim, biseriatim eleganter granosis; serie inferiore parva fusca, superiore maxima margaritacea; apertura rotunda; sinu laterali postico tubiformi. Axis 2 lin.

Geog. St. Vincent’s, West Indies; Rev. W. J. Guilding. Cab. Gray et Metcalfe.

Translation of the Latin text.

Small shell; twelve whorls with two finely granulated rows; dark smaller lower row, whitish bigger upper one; rounded aperture; lateral sinus posteriorly tubular. Height 2 lines.

Diagnosis.

Syntype NHMUK 196536 4.9 mm high. Shell conical, with nine flat whorls bearing two strongly tubercled spiral cords. The base has one additional tubercled spiral cord. Siphonal canal quite long, with two spiral ridges, posterior canal tubular and ca 1 mm more interiorly than the lip. Protoconch paucispiral of 1.5 whorls. Shell white with an orange stripe on the second spiral cord.

Remarks.

Rolán and Fernández-Garcés (1993) stated that a lectotype designation was in progress by Moolenbeek and Faber, but the paper was never published (M. Faber, pers. comm., May 2014).

Figures

Figure 23. Triphoris castus Hinds, 1843, St Vincent, Caribbean, J. E. Gray coll. A-E Syntype NHMUK 196536: front (A), side (B), back (C), apex (D), siphonal canal (E). F-J Syntype NHMUK 196537: front (F), side (G), back (H), upper teleoconch whorls (I) and peristome (J). K Original labels. Scale bars: A-C: 1 mm; D-J: 0.5 mm. Images are property of the NHMUK, courtesy of H. Taylor, NHMUK Photographic Unit.