CONTENTS 



Genus IV. Thiospira Vislouch, 1914 82 



Genus V. Thiobacillus Beijerinck, 1904 83 



Family IV. Pseudomonadaceae Winslow et al., 1917 88 



Genus I. Pseudomonas Migula, 1894 89 



Genus II. Xanthomonas Dowson, 1939 152 



Genus III. Acetobacier Beijerinck, 1898 183 



Genus IV. Aeromonas Kluyver and van Niel, 1936 189 



Genus V. Photohacterium Beijerinck, 1889, emend. Breed and Lessel, 



1954 193 



Genus VI. Azotomonas Stapp, 1940 198 



Genus VII. Zymomonas Kluyver and van Niel, 1936 199 



Genus VIII. Protaminobacter den Dooren de Jong, 1926 200 



Genus IX. Alginomonas Thj0tta and K&ss, 1945 202 



Genus X. Mycoplana Gray and Thornton, 1928 204 



Genus XI. Zoogloea Cohn, 1854 206 



Genus XII. Halobacterium Elazari-Volcani, 1940 207 



Family V. Caulobacteraceae Henrici and Johnson, 1935, emend. Breed 212 



Genus I. Caulobacter Henrici and Johnson, 1935 213 



Genus II. Gallionella Ehrenberg, 1838 214 



Genus III. Siderophacus Beger, 1944 216 



Genus IV. Nevskia Famintzin, 1892 216 



Family VI. Siderocapsaceae Pribram, 1929 217 



Genus I. Siderocapsa Molisch, 1909 218 



Genus II. Siderosphaera Beger, 1944 220 



Genus III. Sideronema Beger, 1941 220 



Genus IV. Ferribacterium Brussoff , 1916 221 



Genus V. Sideromonas Cholodny, 1922 222 



Genus VI. N aumanniella Dorff, 1934 223 



Genus VII. Ochrobium Perfiliev, 1921 225 



Genus VIII. Siderococcns Dorff, 1934 225 



Genus IX. Siderobacter Naumann, 1922 226 



Genus X. Ferrobacillus Leathen and Braley, 1954 227 



Family VII. Spirillaceae Migula, 1894 228 



Genus I. Vibrio Miiller, 1773 229 



Genus II. Desulfovibrio Kluyver and van Niel, 1936 248 



Genus III. Methanobacterium Kluyver and van Niel, 1936 250 



Genus IV. Cellvibrio Winogradsky, 1929 250 



Genus V. Cellfalcicula Winogradsky, 1929 252 



Genus VI. Microcyclus 0rskov, 1928 253 



Genus VII. Spirillum Ehrenberg, 1832 253 



Genus VIII. Paraspirillum Dobell, 1912 257 



Genus IX. Selenomonas von Prowazek, 1913 258 



Genus X. Myconostoc Cohn, 1875 260 



Order II. Chlamydobacteriales Buchanan, 1917 262 



Family I. Chlamydobacteriaceae Migula, 1894 262 



Genus I. Sphaerotilus Kiitzing, 1833 263 



Genus II. Leptothrix Kiitzing, 1843 264 



Genus III. Toxothrix Molisch, 1925 269 



Family II. Peloplocaceae Beger, fam. nov 270 



Genus I. Peloploca Lauterborn, 1913 270 



Genus II. Pelonema Lauterborn, 1915 271 



Family III. Crenotrichaceae Hansgirg, 1888 272 



Genus I. Crenothrix Cohn, 1870 272 



