Abstract
THE grapsoid crab, Brachynotus sexdentatus (Risso) subsp. gemmellaroi (Rizza), has been found to be common in the Queen's Dock, Swansea. The crab is a Mediterranean form1, which does not seem to have been recorded previously in Britain. Indeed it appears that this is the first record of Brachynotus sexdentatus north of the Mediterranean. Specimens have been compared with material in the British Museum (Natural History) and their identification has been kindly confirmed by Dr. Isabella Gordon.
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NAYLOR, E. Introduction of a Grapsoid Crab, Brachynotus sexdentatus (Risso), into British Waters. Nature 180, 616–617 (1957). https://doi.org/10.1038/180616a0
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DOI: https://doi.org/10.1038/180616a0
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