Exceptional finding in the Mediterranean.

This record provides a scholarly reference copy of: Nicolay, K. & Angioy, M. (1985). *Exceptional finding in the Mediterranean*. *La Conchiglia* 192–193: 16–18. ────────────────────────────────────────SCOPE AND SIGNIFICANCE────────────────────────────────────────The paper documents an unusual deep-water Mediterranean occurrence of a coralliophiline muricid from the vicinity of Cagliari, Sardinia. The authors interpret the Sardinian material as closely allied to the western Atlantic *Coralliophila sentix* F. M. Bayer, 1971 and, on the basis of geographic separation combined with minor morphological differences, establish a new subspecies. The contribution constitutes a concise late-20th-century addition to Mediterranean Coralliophilinae knowledge and provides the original protologue for the taxon introduced therein. ────────────────────────────────────────MATERIAL BASIS AND LOCALITY────────────────────────────────────────The taxon is based on two Mediterranean shells collected by Antonio Carcassi approximately 33 nautical miles SE of Cagliari (Sardinia) from muddy-sand substrate at 374–380 m depth in association with *Madrepora oculata*. A third specimen from the same locality is mentioned but was not examined. ────────────────────────────────────────TAXONOMIC ACT (PROTOLOGUE)────────────────────────────────────────*Latiaxis (Babelomurex) sentix carcassii* Nicolay & Angioy, 1985 — new subspecies • Embryonal whorls: missing in both specimens (original shell height likely slightly greater). [Type material — figured specimens]• Holotype: — shell height ca. 40 mm• Paratype: — shell height 44.6 mm [Type locality]• Western Mediterranean Sea, off SE Cagliari, Sardinia• Substrate: muddy-sand bottom• Depth: 374–380 m [Etymology]• Named in honour of Antonio Carcassi (collector of the material). ────────────────────────────────────────DIAGNOSTIC RATIONALE (AS STATED BY THE AUTHORS)────────────────────────────────────────The Sardinian shells are considered to match closely *Coralliophila sentix* F. M. Bayer, 1971 (currently accepted as *Babelomurex sentix* (Bayer, 1971); AphiaID: 234159). Bayer’s original description is reproduced and no full redescription is provided. The proposed subspecific distinction rests primarily on:• larger adult size• weaker spiral sculpture• marked geographic separation between Antillean and Mediterranean populations ────────────────────────────────────────CURRENT TAXONOMIC STATUS (MolluscaBase)────────────────────────────────────────MolluscaBase (AphiaID: 1812386; SourceID: 41196) treats *Latiaxis sentix carcassii* Nicolay & Angioy, 1985 as an unaccepted junior subjective synonym of *Babelomurex perfectus* (P. Fischer, 1883).The nominal species discussed by the authors, *Coralliophila sentix* Bayer, 1971 (AphiaID: 234159), is currently placed in *Babelomurex*. ────────────────────────────────────────SOURCE AND PURPOSE────────────────────────────────────────This deposition preserves the protologue for nomenclatural verification, historical traceability, and systematic study within the Institute for Molluscan Systematics (IMS) reference corpus.