SUBGROUPS AND GENERA OF THE BACTERIACEAE 31 



chains, usually motile by means of peritrichous flagella, producing 

 endospores under suitable conditions of growth, usually Gram- 

 positive. 



The following pseudogeneric names of organisms within this 

 tribe have been employed, but never have been used with 

 a species or in a strict generic sense, and are not valid as 

 genera. 



Amylobacter Trecul, 1865, p. 432 



Urobacter Trecul, 1865, p. 432 



Urocephalum Trecul, 1865, p. 432 



Megabacterium Billroth, 1874, p. 16 



Mesobacterien Billroth, 1874, p. 16 



Petalobacteria Billroth, 1874, p. 16 



Streptobacteria Billroth, 1874, p. 18 



Microbacterien Billroth, 1874, p. 18 



Microbacteria Billroth, 1874, p. 18 



Aethylbacillus Fitz, 1878, p. 48 



Polybacteria Van Tieghem, 1884 



Streptobacterium Billet, 1890^ p. 23 



Streptobacillus Preisz? Migula, 1900, p. 374 



Bacterius Kendall, 1902, p. 484 



Bactrillus Kendall, 1902, p. 484 



Bactrinius Kendall, 1902, p. 484 



Microbacterium (Billroth) Smith, 1905, p. 174 



Plennobakterium Gonnermann, 1907, p. 887 



The following generic names have been used, but the species 

 are not identifiable with any degree of certainty: 

 Bactrella Morren, 1830, p. 1 

 Sporonema Perty, 1852, p. 160 



Subgeneric names: 



Streptobacter Schroeter, 1886, p. 158 

 Eu-Cornilia Trevisan, 1889, p. 998 

 Pleurospora Trevisan, 1889, p. 1002 



The following generic name is invalid because earlier used as 

 the generic name of a distinct group of plants. 



