SUBGROUPS AND GENERA OF THE BACTERIACEAE 37 



Bactrinium Fischer, 1895, p. 139 

 Bactrillum Fischer, 1895, p. 139 

 Fenohacter Beijerinck, 1900, p. 200 

 Myxohacillus Gonnermann, 1907, p. 877 

 Serratia Vuillemin, 1913, p. 521 

 not Serratia Bizio, 1823 



Motile, usually by means of peritrichous flagella. Spores not 

 barrel-shaped, without longitudinal ridges. Other characters those 

 of the genus. 



The type species of the subgenus is Bacillus subtilis Cohn. 



Subgenus 2. Bacteridium Davaine, 1868, p. 21 



Synonyms : 



Pollendera Trevisan, 1884 



Bacterium Migula, 1894, p. 237 

 not Bacterium Ehrenberg, 1828 

 not Bacterium Cohn, 1872b, p. 167 



Bacillus Fischer, 1895, p. 139 

 not Bacillus Cohn, 1872, p. 174 



Aplanobacter E. F. Smith, 1905, p. 171 



Non-motile, without flagella. Spores not barrel-shaped, without 

 longitudinal ridges. Other characters those of the genus. 



The type species is Bacillus {Bacteridium) anthracis Cohn. 



The name Bacteridium, according to E. F. Smith, is invalid 

 because of the previous existence of the genus Bactridium, Kunze, 

 1817. Whether or not this invalidates Bacteridium Davaine 

 depends upon the interpretation of Article 57 and Recommenda- 

 tion XXXI of the botanical code. The former states that when 

 the difference between two names, especially two generic names 

 lies in the termination these names are to be regarded as dis- 

 tinct even though differing by one letter only. The latter reads: 



Many names differ by a single letter without risk of confusion. In 

 cases where a close approach to identity is a source of error (ex. Astro- 

 stemma and Asterostemma in one and the same family, Asclepiadaceae) 



THE JOURNAL OF BACTERIOLOGY, VOL. Ill, NO. 1 



