Viriola bayani Jousseaume, 1884

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 : 63-64

Viriola bayani Jousseaume, 1884

( Fig. 38 )

Viriola bayani Jousseaume, 1884: 267 , pl. 4, fig. 20.

TYPE LOCALITY. — New Caledonia.

TYPE MATERIAL. — Syntype. New Caledonia • MNHN-IM-2000-1388; 1 specimen; from type locality .

ORIGINAL DESCRIPTION. — Testa elongato-subulata, solida, gracillima, rufo purpurascente, nitidiuscula; anfractibus persistentibus 23, planis, carinis tribus, laevibus, sat prominentibus, instructis; carinarum interstitiis clathratis; sutura lineari, distincta, filomarginata; ultimo inferne complanato, quinque carinato; apertura rhomboidaea, intus alba, fusco-zonata, lateraliter fissa; canali elongato, recurvo, tenuissime striato. — Long. 17 millim., lat. 2.7 millim.

[Latin diagnosis followed by a discussion in French]

TRANSLATION OF THE LATIN TEXT. — Subulate-elongated shell, solid, very slender, purplish red, slightly bright; whorls are constantly 23, flattened, with three smooth and quite prominent spiral cords; cord interspaces are latticed; linear and distinct suture, with a smooth cord at its margin; the last whorl is flattened below, with five spiral cords; rhomboid aperture, internally white, banded with brown, laterally fissured; elongated siphon, curved, finely striated. — Length 17 mm, diameter 2.7 mm.

DIAGNOSIS. — Very elongated shell with flat sides. Syntype 16.6 mm high. Teleoconch of c. 22 whorls. Three spiral cords present, the second appearing between the fifth and the eighth whorl. All three spiral cords smooth with prosocline axial ribs in the interspaces. Peristome incomplete in the syntype, but with an additional spiral cord below the second spiral cord. Base with two additional smooth spiral cords. Teleoconch brown with white blotches on the spiral cords. Protoconch missing in the syntype.

Figures

FIG. 38. — Viriola bayani Jousseaume,1884,New Caledonia:A, original figure in Jousseaume (1884); B-H, syntype,MNHN-IM-2000-1388; front (B), side (C), back (D), microsculpture (E), peristome (F), apex (G, H); I, J, original labels. Scale bars: A-D, 2 mm; E, 0.4 mm; F, 0.5 mm; G, H, 0.2 mm.