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 Mastonia maenades Jousseaume, 1898 ( Fig. 53 ) Mastonia maenades Jousseaume, 1898: 72 , not illustrated. ORIGINAL LOCALITIES. — Aden , Perim Island (Bab al-Mandab Strait, Yemen ), Djibouti . TYPE MATERIAL . — Syntypes . Djibouti • MNHN-IM-2000-485 ; 6 specimens . Saudi Arabia • MNHN-IM-2000-510; 3 specimens ; Jeddah . ORIGINAL DESCRIPTION. — Testa solida, elongato-turrita, apice acuminata, nitens, alba, maculis ferrugineis longitrorsum irregulariter picta, granulis biseriatim dispositis cincta, intervallum funiculo parum granulosa divisum; anfr. 15-16 sutura sat distincta separati, primi 4 fulvi, sequentes 2 albi, alteri ferrugineo-maculati, ultimus contractus, costis quinis granulosis rugatus, ad basim laevus, apertura subovalis lateraliter fissa; canalis brevis parum abrupte recurvatus.Long. 5 mm 5; diam. 1 mm 5. [Latin diagnosis followed by a discussion in French] TRANSLATION OF THE LATIN TEXT. — Solid shell, turreted-elongated, acute apex, bright, white, with irregular rust-coloured spots, with two series of granules, interspaces are separated by a slightly granular little cord; from 15 to 16 whorls separated by a quite distinct suture, first four whorls are brown, subsequent are white, the other whorls present rust-coloured spots, last whorl restricted, with five granular spiral cords, left-handed at the base, subovate and laterally fissured aperture; short siphon, abruptly and slightly curved. Length 5 mm ; diameter 1.5 mm . DIAGNOSIS. — Shell conical with flat sides. Illustrated syntype 6.1 mm high. Teleoconch of 11 whorls. Three spiral cords present, the second appearing on the sixth whorl. First and third cords with tubercles at the intersection with rather prosocline axial ribs. Second cord initially as a fine thread, but later developing thin tubercles. Spiral microsculpture of weakly granulate fine threads. Peristome with short additional spiral cords below the second and third spiral cord. Base with two additional spiral cords of which the first developing tubercles and the second smooth. Protoconch incomplete in the syntype , but clearly multispiral with two spiral keels and axial riblets.Teleoconch with the first two whorls white, others with brown blotches on a whitish background. Protoconch brown.