Abstract
Thirteen species of tanaidaceans have been investigated over a period of one year. For some species the material was too small to offer any information, from others comprehensive enough to permit discussing the biology. The Norwegian distribution is given, with new localities for Leptognathia Longiremis and Typhlotanais tenuicornis. Some species have had their bathymetrical distribution extended by several hundred meters, viz. Leptognathia brevimanu, L. filiformis, Typhlotanais aequiremis and T. brevicornis.

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