March 4, 2001
From: Ron Velarde
Dear Orso / Bill,
Your animal looks like Acteocina inculta (Gould, 1856). Behrens (1991) states that "it is common, plowing around on mudflats in bays and lagoons from Monterey Bay, California to the Gulf of California".
I attempted to attach an image, taken by Kelvin Barwick, of the gizzard plates of a specimen of A. inculta from off San Diego.
Hope this helps.
email@example.comVelarde, R., 2001 (Mar 4) Re: Retusa? from Baja California. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3892
Variable shell-shape is one other thing that makes me nervous trying to identify some of the liittle bubble-shells. Which is why local knowledge of populations is so important. In Dave Behrens' photo the spire is quite a bit more pronounced then in Orso's photo. Is this variable in Acteocina inculta? Some species of Retusa are also very variable in shell shape.