Grazer and detritus feeder in the shallow infralittoral.
Original taxon: Setia macilenta.
Synonym concinnata Jeffreys.
Similar to intersecta Cantraine, « but it is not striated, more conical, acute and has a deeper suture. Its labial margin is sharp instead of thickened. » – T. A. di Monterosato: “Conchiglie della zona degli abissi”, Bullettino della Società Malacologica Italiana vol. VI (1880), Pisa 1881, p.69. Umbilicus shallow but imperforate (Jeffreys).
On mud, Venice lagoon, Chioggia, Veneto, NE. Italy. 1mm.