Berthellina quadridens from Jamaica

October 6, 2003
From: Ross W. Gunderson

Dear Bill:
Here is another sea slug from Jamaica. As I said in my first message, all specimens were collected from St. Ann's Bay, Jamaica, West Indies. Photo: R. Gundersen.

Here is Berthellina quadridens. 3 cm. Found under coral rock on back reef at 1m depth. Upper surface smooth.

Best wishes,

Gundersen, R.W., 2003 (Oct 6) Berthellina quadridens from Jamaica. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Ross,
As you will see in various discussions on the Forum, it seems there are major problems identifying orange-yellow coloured species of Berthellina and Berthella from external features. It seems there are a number of species in the Atlantic and Indo-West Pacific which can only be distinguished on anatomical differences. Unfortunately this work has not yet been completed so in the meantime we can only sit back and wait.
Best wishes,
Bill Rudman

Rudman, W.B., 2003 (Oct 6). Comment on Berthellina quadridens from Jamaica by Ross W. Gunderson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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