NO. 2 HARTMAN : POLYCHAETOUS ANNELIDS 287
Laeospira borealis (Daudin)
Fauvel, 1927, p. 399, fig. 135.
Throughout the Dillon Beach and Tomales Bay areas, this occurs
commonly on hard surfaces, algae or other foreign objects.
Dexiospira spirillum (Linneaus)
Fauvel, 1927, pp. 392-393, fig. 132.
Habitats are the same as for Laeospira borealis (above). The two
species are sometimes found on the same surfaces.