Abstract
Phallodrilus tempestatis n.sp., a marine tubificid (Annelida: Oligochaeta) from intertidal habitats of British Columbia, is characterized by frequent extension of one spermathecal ampulla into IX, the broad attachment of the anterior prostate to the atria, and the form and number of penial setae. Phallodrilus tempestatis n.sp. extends the distribution of Phallodrilus to the North Pacific.