Perrinia stellata is a species of sea snail, a marine gastropod mollusc in the family Chilodontaidae.
Description The shell size varies between 9-14mm with smaller version recently found (2.65-6.98 mm long by 1.15-2.56 mm wide). https://www.researchgate.net/publication/325017514_New_Records_of_Perrinia_stellata_Adams_Mollusca_Gastropoda_Chelodontidae_and_Iravadia_quadrasi_Boettger_Gastropoda_Iravadiidae_from_India "Shell 7mm thick, elongate conical, with strong, stellate, keel like spiral cord; pointed apex with close-set, curved, axial pelicula."
Distribution This species is distributed in the Red Sea and the Western Indian Ocean in the intertidal area 18-50 meters deep.
References
Kilburn, R.N. (1977) Taxonomic studies on the marine Mollusca of southern Africa and Mozambique. Part 1. Annals of the Natal Museum, 23, 173–214. Vine, P. (1986). Red Sea Invertebrates. Immel Publishing, London. 224 pp Bosch D.T., Dance S.P., Moolenbeek R.G. & Oliver P.G. (1995) Seashells of eastern Arabia. Dubai: Motivate Publishing. 296 pp. Reid D.G. (2007) The genus Echinolittorina Habe, 1956 (Gastropoda: Littorinidae) in the Indo-West Pacific Ocean. Zootaxa 1420: 1–161 Herbert D.G. (2012) A revision of the Chilodontidae (Gastropoda: Vetigastropoda: Seguenzioidea) of southern Africa and the south-western Indian Ocean. African Invertebrates, 53(2): 381–502.
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