Pyrgula rusti nom. nov.

Micromelania carinata Gillet & Geissert 1971: 134, pl. 7, figs 4–4a, pl. 12, figs 4–4a [non Micromelania carinata Andrusov, 1890].

Etymology. In honor of Jes Rust (University of Bonn), who intensively worked on the mollusk fauna of the Aegean region.

Type locality. Trílofon (= Trilophos), Thessaloniki, Greece.

Age. Trilophos Formation, Messinian (= mammal zones late MN 12 to MN 13; see Rust 1997).

Holotype. No holotype was designated (see also Rust 1997, p. 115); information about storage of material and collection number missing.

Discussion. This species was introduced by Gillet & Geissert (1971) as a primary homonym of Micromelania carinata Andrusov, 1890 . Although both taxa have been recombined since then, the junior name is permanently invalid according to ICZN (1999, Article 57.2) and needs a replacement name. Micromelania carinata Andrusov, 1890 has been recombined as Turricaspia carinata (source of recombination unclear; see Iljina et al. 1976) and " Micromelania carinata Gillet & Geissert, 1971 " as Pyrgula carinata by Rust (1997, p. 114). We follow the revised systematic placement and introduce the replacement name within the genus Pyrgula .

None of the mentioned taxa should be confused with two other new hydrobiid species introduced by Gillet & Geissert (1971), Hydrobia carinata (p. 131) and Caspia carinata (p. 136).