GENERAL SYSTEMATIC BACTERIOLOGY 247 



whence the name Caryobacterium. The nucleus is not permanent and 

 is visible only from cultures in peptone-carbohydrate (preferably mal- 

 tose) and a polyvalent alcohol (marmitol). 



Caseobacterium. A genus proposed by Orla- Jensen (1909, p. 311) 

 to include those gram positive rod-shaped lactic acid bacteria which 

 for the most part attack or degrade the casein, forming monoamino 

 acids. These forms are facultative or anaerobic. All are non-motile. 

 The only species definitely ascribed to this genus is Caseobacterium 

 casei which may be regarded as the type. It is placed in the family 

 Acidobacteriaceae of the order Cephalotrichinae. 



This generic name may be a synonym of Lactobacillus which has 

 priority over it. The name has not come into general use. 



Cellulobacillus. A genus proposed by Orla- Jensen (1909, p. 343) 

 to include those anaerobic peritrichous bacteria which ferment cellulose, 

 and are capable of producing butyric acid and gas from sugars. No 

 species is definitely ascribed to this genus by the author. It is included 

 as the third genus of the family Butyribacteriaceae. 



The author states: 



Von der Gattung Butyribacillus miissen wir ebenfalls die cellulosevergaron- 

 den Bakterien, die Gattung Cellulobacillus, ableiten. Wahrend diese interes- 

 santen Mikroorganismen sich einerseits mit Ammoniak als einziger Stickstoff- 

 quelle begniigen konnen, zeigen sie andererseits eine eigentiimliche Spezialent- 

 wickelung dadurch, dasz sie imstande sind, ein so widerstandsfahiges Kohlenhy- 

 drat wie die Cellulose anzugreifen, und dasz sie von den anaeroben Bakterien die 

 Kohlenhydrat am besten ausnutzen (siehe die Methangarung). Da Cellulobacil- 

 lus somit einen Kulminationspunkt bezeichnet, konnen wir nicht ohne zwingende 

 Griinde hiervon andere Gattungen ableiten sondern miissen diese Gattung als 

 einen insolierten Seitenzweig betrachten. 



Enlows (1920, p. 26) gives the type species (monotype) as Cellulo- 

 bacillus methanigenes. 



Cellulomonadeae. A name proposed for the third tribe of the 

 family Bacteriaceae by Bergey et al. (1923, p. 154). The description 

 follows : 



Short rods, occurring in soil, having the property of digesting cellulose. 

 Motile, or non-motile. Chromogenic or non-chromogenic. Growth on ordinary 

 culture media often not vigorous. Gram-negative. 



There is a single genus Cellulomonas. 



Cellulomonas. A name proposed by Bergey et al. (1923, p. 154) 

 for the single genus of the tribe Cellulomonadeae. 

 The description is as follows: 



