Above, the animal pictured in Forbes & Hanley: A history of British Mollusca and their shells vol. I, London 1853, plate JJ.
 
The species is « abundant all around our shores; plentiful everywhere dead in shell-sand, and living under stones and among corallines near low-water mark. Hence it ranges in great quantity throughout the Laminarian region. » – Forbes & Hanley: op. cit. vol. III, London 1853, p.102.

« In September 2013, a sample of gastropod molluscs was collected from the abandoned algae on the floor of a fisherman’s boat, after the cleaning of his bottom-set net, in the port of Cala Iris, located at approximately 60km west of Al Hoceima (mediterranean coast of Morocco). This is a local artisanal fishing activity, carried out on a rowing boat equipped with a small engine, in an area near the port, about fifteen meters deep. Among the specimens of different species of Rissoidae, two live specimens of Rissoa parva caught our attention. » – Delongueville & Scaillet: “Rissoa parva (da Costa, 1778) - présence en Mer d’Alborán”, Xenophora 147, july 2014, p.8-12.

Growth series showing a young shell (top-left, unsculptured, patterned) and the opposite (top-right, unpatterned, with strongly marked radial costae on the body whorl). Intergrades display costae of various strenght (always slightly opisthocline), inner spiral bands, and a brown labial croissant.