A small though interesting collection of polychaetous annelids was collected by Comdr. David C. Nutt, USNR, during the United States Navy Antarctic Expedition, 1947-48. Twenty-nine species, including one new, Octobranchus phyllocomus
, in 15 families are represented. Most of the specimens come from Marguerite Bay; others are from Ross Island, Knox coast, and vicinity of Peter I Island. Depths range from shore to 115 fathoms. The collections with type specimen are deposited in the United States National Museum; a partial duplicate set is at the Allan Hancock Foundation. The illustrations were prepared by Anker Petersen. I am indebted to the Administration of the Allan Hancock Foundation for permission to examine these materials.
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