Iniforis douvillei 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 : 71-72

Iniforis douvillei Jousseaume, 1884

( Fig. 44 )

Iniforis douvillei Jousseaume, 1884: 241 , pl. 4, fig. 3 (fixed by monotypy).

TYPE LOCALITY. — Mauritius.

TYPE MATERIAL. — Holotype • Mauritius; MNHN-IM-2000-716, Mauritius.

ORIGINAL DESCRIPTION. — Testa solida, luteo-alba, elongato-turrita, antice perparum tumida; anfractibus 15 (primi laevigati, nitidi, albi; sequentes tuberculis biseriatim dispositis, ornati), sutura vix distincta separatis; ultimo carinis tribus moniliformibus cincto, ad suturam pone insertionem marginis externae tubifero; apertura subrotundata, lateraliter fissa, superne canali recurvo, unicostato, munita. — Long. 6, lat. 1-5 millim.

[Latin diagnosis followed by a discussion in French]

TRANSLATION OF THE LATIN TEXT. — Solid shell, yellow-white, turreted-elongated, anteriorly very little swollen; 15 whorls (first whorls are smooth, bright, white; subsequent whorls are adorned by two series of tubercles), separated by a barely distinct suture; last whorl with three tubercled cords, tubular behind the insertion of the external margin near the suture; roundish aperture, laterally fissured, above with a curved and unicarinated siphon. — Length 6, diameter 1-5 mm.

DIAGNOSIS. — Shell conical with flat sides. Holotype 5.9 mm high. Teleoconch of 12 whorls. Three spiral cords present, the second only visible on the last whorl. First and third cords with tubercles at the intersection with prosocline axial ribs. Second cord initially as a fine thread and developing thin tubercles towards the peristome. Spiral microsculpture of weakly granulate fine threads. Posterior sinus deep developing into a short tube. Base with three additional spiral cords of which the first tubercled, the second weak and smooth, the third smooth. Protoconch badly broken in the holotype, but apparently paucispiral with a row of large tubercles. Teleoconch whorls on the upper half white, the lower half light brown. Protoconch white.

Figures

FIG. 44. — Iniforis douvillei Jousseaume, 1884, Mauritius: A, original figure in Jousseaume (1884); B-K, Holotype, MNHN-IM-2000-716: front (B, C), side (D, E), back (F), apex (G, H), microsculpture (I), peristome (J, K); L, original label. Scale bars: A-F, 1 mm; G, H, 0.1 mm; I, 0.2 mm; J, K, 0.4 mm.