Gazelletta = Named in memory of the German ship "Gazelle," which was engaged in deep-sea soundings during the years 1874 to 1876, under the command of Captain Schleinitz (Naturalist, Professor Studer).
Gorgonetta = Diminutive of Gorgo, Medusa.
Polypetta = Diminutive of Polypus.
Castanarium = Shell similar to a chestnut, Castanea.
Castanella = Diminutive of Castanea.