Stomatella impertusa, common name the strigose stomatella or the elongate false ear shell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Description The length of the shell varies between 5 mm and 25 mm. The small, thin shell has a lengthened oval shape. It is shining, yellowish-green, ornamented with white triangular spots with dark apices, sometimes in series. The shell is decussated by incremental and deeper spiral striae. The shell contains three whorls and a nearly terminal apex. The narrow aperture is oval, its ventral face nearly level. Inside it is shining and greenish. The shell is very delicate and slender, allied to Stomatella planulata, a much larger species, and Stomatella auricula,H.A. Pilsbry (1890) Manual of Conchology XII; Academy of Natural Sciences, Philadelphia, 1890 (described as Gena dilacta)
Distribution This marine species occurs in the Southwest Pacific, off East India, the Philippines, Australia, Japan, in the Red Sea and as a casual find in the Mediterranean Sea.
References
Adams, A. 1850. An arrangement of Stomatellidae, including the characters of a new genus Cumingia, with some additional generic characters. Proceedings of the Zoological Society of London 1850(18): 29–40, pl. 8 Hedley, C. 1917. Studies on Australian Mollusca. Part XIII. Proceedings of the Linnean Society of New South Wales 41: 680–719 Iredale, T. 1924. Results from Roy Bell's molluscan collections. Proceedings of the Linnean Society of New South Wales 49(3): 179–279, pl. 33-36 Allan, J.K. 1950. Australian Shells: with related animals living in the sea, in freshwater and on the land. Melbourne : Georgian House xix, 470 pp., 45 pls, 112 text figs. Iredale, T. & McMichael, D.F. 1962. A reference list of the marine Mollusca of New South Wales. Memoirs of the Australian Museum 11: 1–109 Macpherson, J.H. & Gabriel, C.J. 1962. Marine Molluscs of Victoria. Melbourne : Melbourne University Press & National Museum of Victoria 475 pp Macpherson, J.H. 1966. Port Philip Survey 1957–1963. Memoirs of the National Museum of Victoria, Melbourne 27: 201–288 Coleman, N. 1975. What shell is that? Sydney : Lansdowne Press 298 pp Phillips, D.A.B., Handreck, C., Bock, P.E., Burn, R., Smith, B.J. & Staples, D.A. (eds) 1984. Coastal Invertebrates of Victoria: an atlas of selected species. Melbourne : Marine Research Group of Victoria & Museum of Victoria 168 pp. Wilson, B. 1993. Australian Marine Shells. Prosobranch Gastropods. Kallaroo, Western Australia : Odyssey Publishing Vol. 1 408 pp. Higo, S., Callomon, P. & Goto, Y. 1999. Catalogue and Bibliography of the Marine Shell-bearing Mollusca of Japan. Japan : Elle Scientific Publications 749 pp Zenetos A., Gofas S., Russo G. & Templado J., 2004: CIESM Atlas of exotic species in the Mediterranean. 3. Molluscs (F. Briand, ed.) CIESM Publishers, Monaco 376 p. Streftaris, N.; Zenetos, A.; Papathanassiou, E. (2005). Globalisation in marine ecosystems: the story of non-indigenous marine species across European seas. Oceanogr. Mar. Biol. Annu. Rev. 43: 419–453
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