82 International Code of Nomenclature 



Rules 17b, 17c. Changes in Names of Taxa 



must be retained for one of the genera, that containing the type 

 species if one had been originally established. 



Rule 17c. The Enterobacteriaceae Subcommittee in its report pre- 

 sented to the Rome Congress (1953, Int. Bulletin, •/:47) included 

 Aerobacter aerogenes in the genus Klebsiella; this action deprived 

 Aerobacter Beijerinck of its generally accepted type species. Edwards 

 and Fife (1955, /. Bact., 70:^82) proposed that Aerobacter should be 

 redefined with Aerobacter cloacae as type species. To become effective 

 this would require international approval. Later, Hormaeche and 

 Edwards (Internatl. Bull. Bact. Nomen. and Tax. 5:111-115. 1958) 

 withdrew the earlier proposal and substituted for it a redefinition of 

 the genus Aerobacter based on a motile strain which they designated 

 A. aerogenes. 



