Campyloderes macquariaeJohnston, 1938 (Kinorhyncha: Cyclorhagida) from the northern hemisphere

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Abstract
The discovery in relatively large numbers of the cyclorhagid kinorhynch Campyloderes macquariae Johnston in holdfasts of kelp (Laminaria hyperborea) along the North East coast of Britain is reported. Previous records of the species were confined to Antarctic benthic sediments. The species is redescribed and an assessment is made of the variability of features of taxonomic importance. The relationships between species within the genus Campyloderes and between Campyloderes and other genera within the Order Cyclorhagida are discussed. The first and second juvenile stages of C. macquariae are described and the zoogeographical significance of the new North Sea records is considered.