Abstract
DR. HIROAKI AIKAWA has recently supplemented his first paper on the newly-hatched crab zoeas of Japan (1929) with one on the intermediate (later zoeal) stages between the first zoea and the megalopa. Crab zoeas of all kinds are very common in the Japanese plankton, but few of them have been traced to the adults, and the author has devised a distinctly helpful scheme for placing them in groups characterised by definite features. Recent research by other workers has shown that there are several larval characters by means of which the various natural divisions can be recognised; the Oxyrhyncha can be divided from the Brachyrhyncha and many of the families and genera can be identified, whilst by rearing the individuals several species are now known throughout the whole life-history. The Dromiacea always stand apart and should certainly be separated from the Brachyura.
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Larval Crabs from Japan. Nature 133, 184–185 (1934). https://doi.org/10.1038/133184b0
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DOI: https://doi.org/10.1038/133184b0