Reclassification of Bacteroides hypermegas (Harrison and Hansen) in a new genus Megamonas, as Megamonas hypermegas comb, nov.

Bacteroides hypermegas (Harrison and Hansen) differs to such an extent from the type species of Bacteroides, Bacteroides fragilis (Veillon and Zuber), that it cannot be retained in this genus. On the basis of morphological, biochemical and chemical criteria it is suggested that Bacteroides hypermegas be reclassified in a new genus, Megamonas, as Megamonas hypermegas (Harrison and Hansen) comb. nov.