Mystery California Terrestrial

Data: I found this snail on the wall of our house in Altadena, California a week ago. It is flat, not the conical type. I have never seen one quite like it and wonder if you know what it is and whether it is native to this area or not.

Thank you, Susanna

Send Ideas to: Susanna

Identified: Discus rotundatus (Muller, 1774) (Rounded Snail)



  • Discus rotundatus. Introduced to California from Europe...Barry R.
  • Yes, it is Discus rotundatus....Cristian A.
  • See Femorale for some excellent shell pictures, The Garden Safari for a photo of a living round snail, and Ayden Orsten's web site for more information... Avril B.

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