Review of the types of Indo-Pacific Triphoridae (Mollusca, Gastropoda) in the Muséum national d’Histoire naturelle, Paris Author Albano, Paolo G. Department of Animal Conservation and Public Engagement, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples (Italy) and Department of Palaeontology, University of Vienna, Althanstrasse 14, A- 1090 Vienna (Austria) pgalbano @ gmail. com (corresponding author) Author Franco, Davide Di Author Azzarone, Michele Department of Palaeontology, University of Vienna, Althanstrasse 14, A- 1090 Vienna (Austria) davide. di-franco @ senckenberg. de mikeal. mikeal @ gmail. com franco@senckenberg.de Author J., Piet A. Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden (The hannco. bakker @ Author Bakker Netherlands) @ naturalis. nl Author Sabelli, Bruno Museo di Zoologia dell’Università di Bologna, via Selmi 3, 40126 Bologna (Italy) bruno. sabelli @ unibo. it sabelli@unibo.it text Zoosystema 2023 2023-01-20 45 2 13 106 journal article 10.5252/zoosystema2023v45a2 1638-9387 7569742 urn:lsid:zoobank.org:pub:11878F2F-A180-44B2-8CBC-F1577E258F6F Obesula senilis Jousseaume, 1898 ( Fig. 64 ) Obesula senilis Jousseaume, 1898: 75 , not illustrated. TYPE LOCALITY. — Perim Island, Bab al-Mandab Strait, Yemen . ADDITIONAL ORIGINAL LOCALITIES. — Djibouti . TYPE MATERIAL . — Lectotype . • MNHN-IM-2000-29273; here designated. Paralectotypes . Yemen • MNHN-IM-2000-501; 1 specimen ; from type locality • MNHN-IM-2000-1588; 1 specimen ; from type locality. • Triphoridae indet., MNHN-IM-2000-29274; 1 specimen ; from type locality. ORIGINAL DESCRIPTION. — Testa solida, ovato-conica, apice acuminata, albo et nigro zonata; anfr. circiter 12 primi albi, alteri seriebus tuberculorum tribus, mediana saepe minor, series antica alba, alterae castoneo-nigrae, granulae spiraliter et longitudinaliter funiculo junctas, ultimus quique seriebus granularum rugatus, series postice 2 fulvo nigra, pars antica alba, reticulata; apertura pyriformis, lateraliter fissa; canalis brevis recurvus. Long. 3 mm3; diam. 1 mm2. [Latin diagnosis followed by a discussion in French] TRANSLATION OF THE LATIN TEXT. — Solid shell, ovate-conical, acute apex, banded in white and brown; about 12 whorls, the first whorls are white, the other whorls with three series of tubercles, often the median series is smaller, the anterior series is white, the others are brownish, granules are spirally and longitudinally jointed to a small spiral cord, last whorl with five granular spiral cords, two posterior cords dark brown, anterior ones are white, reticulated; pyriform aperture, laterally fissured; short and curved siphon. Length 3.3 mm ; diameter 1.2 mm . DIAGNOSIS. — Shell cyrtoconoid. Lectotype 3.1 mm high.Teleoconch of 6 whorls. Three spiral cords present, the second appearing on the fifth whorl. First and third cords with tubercles at the intersection with rather orthocline axial ribs. Second cord initially as a fine thread, but later developing thin tubercles. Spiral microsculpture of fine threads. Posterior sinus shallow. Base with two additional weakly tubercled spiral cords, the second smaller. Protoconch damaged in the lectotype . First two teleoconch whorls white, other teleoconch whorls brown with the third spiral cord white. Tip of the siphonal canal and protoconch white. REMARKS. — The type series contained a very worn specimen ( Fig. 63 I-M) which likely belongs to a different species due to the more ovoid shape, the colour pattern on the last whorl (with the first spiral cord white rather than pearly on brown background), the tubercles on this last whorl more elongated, and the lack of an intermediate second spiral cord. Therefore, se designated a lectotype of O. senilis to stabilize the nomenclature.