Triphoris (Ino) cancellatus 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 (Ino) cancellatus Hinds, 1843

Figure 21

Triphoris (Ino) cancellatus Hinds 1843b: 18, not illustrated. Illustration available in Hinds (1844): 28, pl. 8, fig. 6.

Type locality.

Straits of Malacca.

Type material.

Syntypes: NHMUK 1844.6.7.30: 3 specimens, Straits of Malacca (coll. E. Belcher) ; NHMUK 1879.2.26.211: 1 specimen (coll. T. Lombe Taylor) .

Original description.

Testa pallide rufente; anfractibus 15-18 bicarinatis; carinis albo maculatis; inter carinas cancellata lineis albis longitudinalibus intervallis fuscis; sutura sulcata; apertura subquadrata; sinu laterali margine contracta. Axis 4½ lin.

Geog. Straits of Malacca; in 2 fathoms.

Translation of the Latin text.

Pale reddish shell; 15-18 whorls with two spiral cords which bear white spots; a cancellate space with longitudinal white lines and dark intervals occurs between the cords; incised suture; subquadrate aperture; posterior sinus with shrinked edge. Height 4½ lines.

Diagnosis.

Syntype 1 (Fig. 21A-G ) 8 mm high. Shell cyrtoconoid with 15 teleoconch whorls whose sides are characterized by two prominent smooth spiral cords. In between, a fine tuberculated spiral cord develops; on the first whorls, it appears as a fine thread. Axial riblets are present between the cords. The last whorl has a fourth, weakly tuberculated, spiral cord and the base shows an additional smooth spiral cord. The peristome shows an additional spiral cord between the first and the second and fine spiral threads between main cords. Siphonal canal long. Posterior sinus deep. The protonch is multispiral and composed of six whorls. The first two have numerous rounded tubercles; on the third and fourth, there are axial riblets and an equally strong spiral keel positioned abapically; on the last two whorls, a second strong spiral keel develops apically. The teleoconch orange with white flammulae. The second spiral cord on whorls has white tubercles and deep orange to brown interstices. The protoconch is brown.

Figures

Figure 21. Triphoris cancellatus Hinds, 1843. A-G Syntype NHMUK 1844.6.7.30 / 1, Straits of Malacca (coll. E. Belcher): front (A, B), side (C), back (D), protoconch (E), original labels (F), peristome (G). H-K, M Syntype NHMUK 1879.2.26.211, Straits of Malacca (coll. T. Lombe Taylor): front (H), nucleus (I), protoconch (J, K), original labels (M). L Figure in Hinds 1844. Scale bars: A-D, H: 1 mm; E, J, K: 0.2 mm; I: 0.05 mm; G: 0.5 mm.