SUMMARYTwenty-five strains currently classified into 14 serological types or species of the genus Vibrio obtained from the NCIB and NCTC have been studied in detail for morphological, cultural and biochemical characters in two independent studies. The results indicate that these strains include members of three distinct taxonomic groups or genera, Vibrio, Pseudomolzas and Cornamonas. The new generic name Comamolzas, type species C. pmcolang, replaces Lophomonas (Galarneault & Leifson) which is invalid.
SUMMARYSixty-one polarly flagellate bacteria, initially identified as such by the type of motility they displayed, were isolated from surface waters and classified on the basis of cultural and biochemical tests into three genera : Aeromorcas, Pseudomonas, Comamonas. Sixteen similarly flagellated cultures from other sources were also found to be members of these genera. Some bacteria with a single polar flagellum and giving reactions of the Alcaligenes type were isolated. It is suggested that the definition of the genus Cornamonas (Davis & Park) be extended to include such forms. The possibility of confusing Aeromonas with Vibrio and with some enterobacteria is discussed.
The morphology of Vibriofetus, and of some nonpathogenic vibrios isolated from cattle, has been compared with that of 5 type cultures of Vibrio spp., including V . cholerae, and the systematic position of these bovine vibrios reviewed. Morphological differences betwwn V . fetus and the nonpathogenic bovine vibrios have been observed. These may be of assistance in their identification.
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