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 A small topshell (up to 1.5 cm high and 1.7 cm across), it is bluntly conical with a oval-shaped umbilicus. The umbilicus appears as a small but deep hole on the underside of the shell. The shell has five or six whorls. It is grey to light yellowish in colour, with broad stripes of reddish-brown to purple. The apex is sometimes eroded and silvery.In Latin 'Gibber' means hump ('-ula' is a diminutive suffix), and 'Cineraria' means related to ashes, hence 'ash coloured hump'. In Devon and Cornwall, the umbilicus may be covered by the inner lip.


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©  The Marine Biological Association of the United Kingdom

Source: Marine Life Information Network

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