A new coralline boring species of Poly dor a (Polychaeta: Spionidae) from Northern California by James A. Blake, Bull. Southern California Acad. Sci., 80(l):32-35. A new species of Polydora is described from Tomales Point in northern California. The species is a borer in coralline algae and related to the P. giardi group. It differs from its closest relatives in having posterior notopodial spines and a four lobed pygidium.