May 18, 2006
From: Kathe R. Jensen
Concerning message #16607:
Dear Cynthia and Bill,
I do have a picture of Elysia chilkensis. Unfortunately I didn't take the original, Sherman Bleakney from Acadia University, Nova Scotia, Canada did. He has been retired for several years and I don't know his current address. However, I cannot imagine that he would object as long as he is acknowledged for the picture - especially since he also gave me all of his field notes and specimens from his trip to Hong Kong. The picture was taken on 2 January 1981. The specimen had been collected in tide pools at Tsim Bei Tsui, Deep Bay, Hong Kong. I looked very carefully for it when I first visited Hong Kong in 1983, but didn't find any (instead I got Gascoignella aprica from that locality).
Locality: Tsim Bei Tsui, Deep Bay, intertidal, Hong Kong, South China Sea, 2 January 1981. Length: 7 mm. Photographer: J. Sherman Bleakney.
As you can see it differs in a number of ways from E. hirasei: the anterior margin of the head is deeply cleft between the rhinophores, the rhinophores are very long and thin, the anterior foot corners are pointed. If I remember right, it didn't have any papillae on the parapodia, but I may be wrong about that. Thus I doubt that E. chilkensis and E. hirasei are the same species - but I won't completely rule it out.
Jensen, K.R., 2006 (May 18) Re: Elysia hirasei vs Elysia chilkensis. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16626
Thanks for the photo. All we need to do now is go to Chilka Lake and find an animal which fits Eliot's rather poor description of E. chilkensis.