Triphoris (Ino) pagodus 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) pagodus Hinds, 1843

Figure 34

Triphoris (Ino) pagodus Hinds 1843a: 22, not illustrated.

Type locality.

Baclayon, island of Bohol, Philippines.

Type material.

Holotype: NHMUK 196517, fixed by monotypy (H. coll. H. Cuming) .

Original description.

Tri. (Ino) testâ cylindraceâ, elongatâ, acuminatâ, anfractibus 18-20, tricarinatïs; carinis inaequalibus, inferiore multo maximâ, duobus superioribus parvis aequalibus; aperturâ quadratâ. Axis 8½ lin.

The only specimen of this shell is dead and imperfect. It is, however, slightly mottled with brown, being most probably the remains of a uniform colour. It is rendered very distinct from any species hitherto described by the manner of its keeling. A faint elevated line would also appear to traverse the course of the suture.

Hab. Baclayon, island of Bohol, Philippines. Found under stones at low water.

Translation of the Latin text.

Cylindrical shell, elongated, acuminate, 18-20 whorls, with three keels of unequal size, the lowest keel by far the largest, the two above equal and smaller; aperture quadrate. Height 8½ lines.

Diagnosis.

Holotype 18.9 mm. Shell extremely elongated with flat whorls. It lacks the apical part and a portion of the last whorl. The specimen has 15 whorls, with three spiral keels: the third is very prominent whereas the first two are smaller and of equal size. Between these keels, there are prosocline axial threads. Siphonal canal long, peristome missing in the holotype. The base bears one additional strong keel and a second smaller one. A third faint one runs on the siphonal canal. Apex missing in the holotype. Teleoconch worn, but apparently whitish with brown blotches.

Figures

Figure 34. Triphoris pagodus Hinds, 1843, Baclayon, Bohol Island, Philippines, coll. H. Cuming. A-D Holotype, NHMUK 196517: front (A), side (B), back (C), original labels (D). Scale bar: A-C: 2 mm.