In the previous paper, the authors reported the isolation method of the bacteriophages living in the Kinko Bay, describing some characters of the host bacteria. The greater part of the organisms was classified as either Pseudomonas or Vibrios. In the study, the similarity between the individuals among those organisms was mainly discussed. The results obtained were as follows : 1) Similarity values calculated between A-4 and A-6; A-6 and B-4; A-4 and B-4, classified as Pseudomonas respectively, were in the range from 81% to 90%. 2) Of the three strains, A-4 was markedly similar to 1055-1 strain recognized as marine Pseudomonas, isolated at 694 m depth in North Pacific Ocean, their similarity values being above 93%. 3) The similarity value be...