Paludestrina brevispira Paladilhe, 1870

Boeters, Hans D. & Falkner, Gerhard, 2017, The genus Mercuria Boeters, 1971 in France (Gastropoda: Caenogastropoda: Hydrobiidae). West-European Hydrobiidae, Part 13, Zoosystema 39 (2), pp. 227-261 : 254

Paludestrina brevispira Paladilhe, 1870

Paludestrina brevispira Paladilhe, 1870: 243 [separatum: 77]; 1874: pl. 3, figs 27, 28 [figs only].

ORIGINAL INDICATION OF THE TYPE LOCALITY. — “[…] dans les fonds de drague [Brague] venant d’Antibes (Alpes-Maritimes), où elle habite, sans doute, des eaux saumâtres, d’où elle aura pu être entrainée par des cours d’eau.”

TYPES. — About 25 syntypes in PPSUM2 -PAL ; label: “ Pal.rina brevispira Fonds de dragues [sic] venant d’Antibes”.

For the operculum and the shell Paladilhe gives the following description: “Opercule vitré, assez solide, légèrement marqué de stries spirales, peu enfoncé. Animal inconnu. Haut. 6 millim. 2, diam. 1 1/5.” The indication of the Measurements must be erroneous as the figure in natural size ( Paladilhe 1874: pl. 3, fig. 28) shows a shell height of only 2 mm. The shells of 2 syntypes photographed by Boeters have a height of 1.82 and 1.87 mm, respectively. Because of the comparatively small size of the shell and the coulourless operculum it is assumed that the species belongs to Pseudamnicola and not to Mercuria .