Triphoris clavata Pease, 1861

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 clavata Pease, 1861

Figure 75

Triphoris clavata Pease 1861: 434, not illustrated.

Type locality.

"Sandwich Islands" (Hawaiian Islands).

Type material.

Lectotype: NHMUK 1962814, designated by Kay (1965) (coll. H. Cuming). Paralectotype: NHMUK 1962815, 1 specimen, Hawaiian Islands (coll. H. Cuming) .

Original description.

Shell elongate subulate; whorls fifteen to eighteen, bordered on each side by a row of granules, interstices concavely rounded, finely striated spirally, and bordered against the upper row of granules by a light ridge, obsoletely granulose; canal slightly recurved. Colour white or yellowish, interstices between the granules of a purplish or reddish brown, and spotted irregularly with the same.

Diagnosis.

Lectotype 7.3 mm high. Shell weakly cyrtoconoid with flat whorls. Apical whorls broken off. The remaining eight whorls bear two strong spiral cords and a weaker one in second position which develops around mid-shell height. The cords bear tubercles at the interstices with prosocline axial ribs. A fine smooth suprasutural cord is also visible. Numerous very fine spiral cords are present in the interspaces of the main cords. The peristome is partly broken but likely bears weak additional spiral cords. The posterior siphonal sinus is deep and roundish. Siphonal canal rather long. The base has two additional tubercled spiral cords. The protoconch is missing. The shell has a whitish background colour with an orange-brown spiral band between the two main spiral cords with occasional darker blotches.

Figures

Figure 75. Triphoris clavata Pease, 1861, Hawaiian Islands, coll. H. Cuming. A-H Lectotype NHMUK 1962814: front (A, B), side (C, D), back (E), peristome (F, G), aperture (H). I Original labels. Scale bars: A-E: 1 mm; F-H: 0.5 mm.