Abstract
WHILE investigating the moulting stages of pea-crabs, a nocturnal colour change—analogous to that described by Gamble and Keeble in Hippolyte (Quart. Journ. Micros. Sci., 1900; Phil. Trans. Roy. Soc., B, 1903, 1905)—was observed by me in what is apparently Pinnotheres veterum. Last June I received from the Marine Biological Association, Plymouth, an ascidian (A. mentula) which had been dredged off the Mewstone, and from the branchial chamber of which a pea-crab had been found attempting to escape. By the time it reached me two crabs had escaped, a male and a berried female. These are most probably P. veterum.
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ATKINS, D. On Nocturnal Colour Change in the Pea-crab (Pinnotheres veterum). Nature 117, 415–416 (1926). https://doi.org/10.1038/117415b0
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DOI: https://doi.org/10.1038/117415b0
