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Published online by Cambridge University Press: 11 June 2012
The adult antennal glands of Euphausiids have been described by Chun (1896), Zimmer (1913), Raab (1915), and Cannon and Manton (1927). In the course of an investigation into the development of these organs, undertaken by me at the suggestion of Professor H. Graham Cannon, it was discovered that they arise quite late in the life-history, whilst earlier larvæ were found to possess typical maxillary glands. This finding was not unexpected, for an inverse relationship between antennal and maxillary segmental excretory organs has been noted in the development of many Crustacea.