Abstract
Several specimens of a polychaete worm, Manayunkia speciosa Leidy, were found during a limnological survey of the Ottawa River. The specimens occurred only in substrates composed of silt and sand and in moderately moving waters. They were not found in the polluted areas of the Ottawa River. An up-dated record of the species in North America, from 1858 to the present, is also given.

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