Synonym cylindrica Alder, 1844, who writes: « Shell nearly cylindrical, white, transparent, smooth and glossy, with four or five rounded whorls, rather flattened near the suture. Apex very obtuse. Two or three faint striae or ridges run across the body whorl on a line with the upper part of the aperture. Aperture ovate, angulated above. Outer lip thin. Pillar-lip a little reflected, with a slight depression behind it, and a small tooth in the centre of the inner margin. » – J. Alder: “ Descriptions of some new British species of Rissoa and Odostomia”, Annals and Magazine of Natural History vol.13, London 1844, p.327.
Above and below: 4-5m deep, on algae, Algeciras, southern Cádiz Province, SW. Andalucia, SW. Spain. 1,4mm.
The sister species Jordaniella truncatula (Jeffreys, 1850) from the British Isles and Cabo Verde archipelago. The shell is smooth, with only one faint subsutural bead. The end of the columellar palte is hardly visible in front view. Above: two shells from a littoral shell grit collected at Porthcurno, western extremity of Cornwall, SW. England. 1,6-1,8mm.