Slugs with geometric patterns

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Alan, I was thinking like you, that it was an Aglajid. In line with Leslie's identification of these guys as acoel flatworms, here is Dr. Rudman's response from the Sea Slug Forum: http://www.seaslugforum.net/display.cfm?id=15761

"Dear Nick,
These are acoel flatworms. Not as colourful as the usually large polyclad flatworms, but the acoels often occur in very large numbers. I don't know if it is just coincidence that they have a forked tail, which looks very similar to that of Chelidonura, a genus of opisthobranchs which feed on them.

Your animal is probably the same species as the one in Atsushi Ono's message [#974]. Like most flatworms they move much faster than most sea slugs.

Best wishes,
Bill Rudman"
 
Nick - I heard about about the "love child". It's a reptantia nemertean, Drepanogigas (=Drepanophorus) albolineatus. The only records for it so far are from the Mediterranean. Very cool! Jon Norenberg, curator of Nemertea at the Smithsonian, is eager to hear from you about this specimen. I sent you his email via PM.
 
Calypsonick,

It's seams like every day you have a new slug or nudi! Too Cool! Every time I see one of you new posts, Timor rises on my must visit list :wink:
 
Here is an update on the second image, copied below, posted on this thread, thanks to:

Dr. Jon L. Norenburg
Invertebrate Zoology
Smithsonian's National Museum of Natural History
http://nemertes.si.edu

Drepanogigas albolineatus

"I'm pretty excited about this worm because it was previously known from only a single specimen off Naples, Italy, described in 1895 and accompanied by a superb color lithograph. I got a picture a year ago that constituted the second record. Yours makes three. If it were not for the really distinctive pattern and relatively large size I would doubt the ID, but this seems unmistakable."

P2062508.jpg
 

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