Diodora ruppellii (Sowerby, 1835)
Mascarenhas, E. Africa to Red Sea and E. Mediterranean: Suez (1905), Palestine (1948), S. Turkey (1995), Libya (2019)… Predator on sessile preys in the infralittoral.
Original taxon: Fissurella ruppellii.
 
Shell small, high, almost dome-shaped, strongly cancellate, adorned with a contrasted radiating pattern; apical opening elongate, rectangular, slightly anteriorly placed and sloping forwards; peristome denticulate, almost flat. Dedicated to the naturalist Eduard Rüppell, who provided a specimen of this shell to Mr. Cuming’s collection, from which Sowerby worked, giving here some “apparently undescribed species of the genus Fisssurella”, Proceedings of the Zoological Society of London part II, november 1834, p.128.

50cm deep, on stones, Haifa bay, NW. Israel. 19,5mm.
On rocks at low tide, Shavei Zion beach, south of Nahariya, NW. Israel. 20,7mm.

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