November 13, 2009
From: Gary Cobb
Concerning message #22447:
Hi Bill and everyone!
It is with great pleasure that I present Ringicula sp.3. Two live animals were found.
The body shape is very interesting. Especially the truncated tail. These shells are different from the ones we have found before in that they have a more inflated shell and lower spire.
Locality: Woody Point, Redcliffe, Brisbane. 100 mm depth, Queensland, Australia, Pacific Ocean, 10 November 2009, Intertidal. Length: 4.5 mm. Photographer: David Mullins on microscope.
Cobb, G., 2009 (Nov 13) Another living Ringicula from sthn Queensland. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22776
This looks quite like the one I am tentatively calling Ringicula doliaris. The small whitish specks visible all over the headshield are small glands which produce a thick whitish secretion when the animal is disturbed. Of great interest are the larger pinkish glands I can see along the edge of the right lobe of the head shield. Similar glands were reported as 'repugnatorial glands' 50 years ago for a European species, R. buccinea, so it's nice to see they are probably a widespread feature amongst the ringiculids.