[2] Piero Piani (1984) has demonstrated in a publication that there is no reason to prefer the synonym Emarginula reticulata Sowerby, 1813 over the older name Patella fissura Linnaeus, 1758.

[3] The shell of the slit limpet has an elevated conical profile with its apex strongly curved backwards, but never overhanging the posterior margin.

The shell has a reticulate (= net-like) sculpture with 25-35 radial ribs, alternating stronger and weaker, intersecting with spiraled ridges.

The larvae have a short planktonic development, non-planktotrophic as usual in Vetigastropoda and Patellogastropoda[4] The slit limpet is a common keyhole limpet and can be found along the eastern Atlantic, west European coasts, as far north as Norway and the Faroe Islands and south to the Canary Islands.

It thrives on the lower shore and the subtidal zone to a depth of 265 m on rocks and hard substrates where sponges occur.