rocks, high littoral v 33. Rivularia patida Ag. On rocks, littoral v 34. Lingora valida Harv. On cured-beaten rocks, littoral. Subminate very stiff and brittle below, flexible and lubricous toward the tips v 35. Galaxaura puberiflata Kjellm. on rocks in 3dmi. l.t. v 36. Petrosiphon adherens N.Afpt. forming closely adherent suborbicular patches, becoming 1 cm. thick in center, with radial peripheral growth. In tide pools v 37. Hormidium Hendravin M.F.H. or Microthrix sp. earley colorless within, forming orbicular or subemispherical patches on rocks, littoral v 38. Cladophora juliginosa Kutz. Washed ashore v 39. Cladophoropsis membranacea (Ag.) Bory Washed ashore