SUBGROUPS AND GENERA OF THE BACTERIACEAE 39 



Granulobacter Beijerinck, 1893, p. 7 

 ■ Clostrillum Fischer, 1895, p. 139 

 Clostrinium Fischer, 1895, p. 139 

 Paracloster Fischer, 1895, p. 140 

 Semidostridium Maassen, 1905, p. 5 

 Botulobacillus Jensen, 1909a, p. 343 

 Butyrihacillus Jensen, 1909a, p. 342 

 Cellulobacillus Jensen, 1909a, p. 343 

 Putribacillus Jensen, 1909a, p. 343 in part 



Cells rod-shaped, straight or at least never spiral. Frequently 

 showing granules. Endospores usually produced in cells showing 

 some enlargement; usually the cells become spindle-shaped. An- 

 aerobic or microaerophilic. Usually Gram-positive. 



The type species is Clostridium butyricum Prazmowski. 



Genus 4. Metabacterium Chatton and Perard, 1913, p. 1232 



Rod-shaped, known only in the sporulating state, from the caecum 

 of a guinea pig. Sporogenous cell becomes ellipsoidal with one to 

 eight endospores within a single cell. 



The type species is Metabacterium polyspora Chatton and 

 Perard. 



The organism has not been cultivated. The diagnosis makes 

 it evident that the organism is scarcely sufficiently known to 

 make accurate diagnosis possible. It has been urged by Vuil- 

 lemin (1913) as a genus conservandum. 



Tribe II. Bacterieae Trevisan, 1879, p. 136 emended 



Synonyms : 



Klebsielleae Trevisan, 1889, p. 1028 

 Acidobacteriaceae Jensen, 1909a, p. 303 in part 

 Luminibacteriaceae Jensen, 1909a, p. 344 



Cells rod-shaped, never spiral nor strictly filamentous; single 

 or in chains, motile or non-motile, never producing endospores, 

 either Gram-positive or -negative. 



