Microbiological Studies on the Weakening of Fishing Nets-V

The present study is concerned with the taxonomy of marine cellulose-decomposing bacteria belonging to genus Cytophaga. A large number of crude cultures of marine cellulose-decomposing Cytophaga obtained from sea water, bottom mud, or fishing nets submerged in Maizuru Bay, were parely isolated by plating procedure. These isolated bacteria were differentiated to two species and one variety after detailed taxonomical studies. Of these, one species and one variety did not appear to have been described previously, the names Cytophaga rosea nov. sp. and Cytophaga haloflava var. nonreductans nov. var. were proposed. The remaining one species was Cytophaga haloflava which have already been described by the author in part III. Characteristics of Cytophaga rosea nov. sp. and Cytophaga haloflava nonredvctans nov. var. were described. By use of the primary characters listed, a new key to all known species of genus Cytophaga has been constructed.