Triphoris reevei Deshayes, 1863

Albano, Paolo G., Franco, Davide Di, Azzarone, Michele, J., Piet A., Bakker & Sabelli, Bruno, 2023, Review of the types of Indo-Pacific Triphoridae (Mollusca, Gastropoda) in the Muséum national d’Histoire naturelle, Paris, Zoosystema 45 (2), pp. 13-106 : 27

Triphoris reevei Deshayes, 1863

( Fig. 10 )

Triphoris reevei Deshayes, 1863: 101 , pl. 11, figs 25, 26.

TYPE LOCALITY. — Cap La Houssaye, Saint Paul, La Réunion.

TYPE MATERIAL. — Neotype. Reunion Island • MNHN-IM-2000-9493; designated by Jay (2007).

ADDITIONAL MATERIAL. — MNHN-IM-2012-36190; 5 specimens; from type locality.

ORIGINAL DESCRIPTION. — T. testa elongata , angusta, turrita, apice acuminata, albida; anfractibus primis nigro tinctis, quindecimis, angustis, planulatis, biseriatim granulosis, granulis obtusis, inaequalibus, inferioribus minoribus, valde separatis, ultimo anfractu brevi, basi planulato; apertura subcirculari, peristomate continuo, lateraliter emarginato et breviter canaliculato, canali terminali clauso, paulo obliquo. [Latin diagnosis followed by a discussion in French]

TRANSLATION OF THE LATIN TEXT. — Elongated shell, narrow and turreted with an acute apex, white; first whorls brown coloured, fifteen narrow and flattened whorls with two spiral cords of granules, these are unequal, obtuse, strongly separated and the inferior ones are smaller, short last whorl, flattened at the base; almost round aperture, continuous peristome, laterally expanded and shortly channelled, siphon closed and slightly oblique.

DIAGNOSIS. — Shell cyrtoconoid with flat sides. Neotype 5.8 mm high.Teleoconch of 12 whorls. Three spiral cords present, the first and third bearing prominent tubercles at the intersections with slightly prosocline axial ribs. Second cord appearing as a fine spiral thread only on the last two whorls under the first cord, becoming more tubercled on the peristome. Microsculpture of weak spiral threads in interspaces. Peristome with additional cords below the second and third cord. Posterior sinus deep. Base with two additional tubercled spiral cords. Multispiral protoconch of c. 4 whorls with two spiral keels and multiple axial riblets. Teleoconch ivory white, first spiral cord on lower whorls paler. Back side of the siphonal canal with a dark brown to black spot. Protoconch brown.

REMARK. — Neotype illustrated in colour in Jay (2007).

Figures

FIG. 10. — Triphoris reevei Deshayes,1863, La Réunion: A, original figure in Deshayes (1863); B-E, Neotype, MNHN-IM-2000-9493; front (B), side (C), teleoconch microsculpture (D), peristome (E); F-P, MNHN-IM-2012-36190: front (F, G), side (H, I), back (J), peristome (K, L), first protoconch whorl (M), protoconch (N, O), teleoconch microsculpture (P). Scale bars: B, C, F-J, 1 mm; D, N-P, 0.2 mm; E, K, L, 0.4 mm; M, 0.05 mm.