Simnia arcuata, common name Vidler's simnia, is a species of sea snail, a marine gastropod mollusk in the family Ovulidae, the ovulids, cowry allies or false cowries. Description The size of an adult shell varies between 8 mm and 26 mm. Distribution This species occurs in the Pacific Ocean off the Galapagos Islands and from California to Peru. References Lorenz F. & Fehse D. (2009) The living Ovulidae. A manual of the families of allied cowries: Ovulidae, Pediculariidae and Eocypraeidae. Hackenheim: Conchbooks. External links Ovulidae Gastropods described in 1865