GENERAL SYSTEMATIC BACTERIOLOGY 97 



b. Ferments glucose partially, with production of acid but no gas, 



does not ferment lactose. 



1. Motile Eberthus. Castellani and Chalmers, 1918 



2. Non-motile Shigella. Castellani and Chalmers, 1918 



c. Ferment glucose and lactose partially with production of acid, 



but without gas. .Dysenteroides. Castellani and Chalmers, 1918 

 II. Milk coagulated. Partial fermentation of glucose with production of 

 acid but no gas: does not ferment lactose (no gas from any sugar) 



Lankoides. Castellani and Chalmers, 1918 



B. Ferment glucose completely with production of acid and gas, but do not fer- 



ment lactose. 



I. Do not coagulate milk. 



Salmonella. Lignieres emendav. Castellani and Chalmers 

 II. Coagulates milk Balkanella. Castellani and Chalmers 



C. Ferment glucose completely with production of acid and gas; lactose partially 



fermented with acid and no gas, does not coagulate milk. 



Wesenbergus. Castellani and Chalmers, 1918 



In May 1920 the final report of the Committee (Winslow et al., was 

 pubUshed. The principal changes from the suggested grouping of 

 1917 were as follows: 



The group recognized in 1917 as the family Mycobacteriaceae has now been ele- 

 vated to the rank of an order Actinomycetales, and divided into two families, 

 Actinomycetaceae and Mycobacteriaceae. To the former family we have added the 

 genera Actinobacillus and Erysipelothrix, and we have omitted Nocardia, which 

 Breed (1919) has recently shown should be combined for the present with Actino- 

 myces. To the second family we have added the genus Pfeifferella. 



The Nitrobacteriaceae have been divided into two tribes, the Nitrobactereae and 

 Azotobactereae, and the definition of the family has been modified to permit the 

 inclusion of Rhizobium which recent investigations have shown to possess peri- 

 trichous flagella, but whose general characteristics ally it clearly with Azotobacter. 

 The name Acetobacter has been substituted for Mycoderma to characterize the 

 vinegar organisms. 



Among the Coccaceae a new tribe was created for the genus Neisseria. The 

 genus Albococcus is united with Staphylococcus and the new genera Diplococcus 

 and Leuconostoc are added. 



The Bacteriaceae are divided into seven tribes: Chromobactereae, Erwineae, 

 Bactereae, Lactobacilleae, Pasteur ell eae, Hemophileae, and Zopfeae, and the new 

 genera Erythrobacillus, Chromobacterium, Zopfius, and Proteus are added. The 

 Lactobacillaceae, originally recognized as a distinct family, are thus classed as a 

 tribe of the Bacteriaceae. 



Artificial Key to the Families and Genera of the Actinomycetales and 

 Eubacteriales. Winslow et al. (1920) 



A. Typically filamentous forms. Actinomycetaceae. 



B. Mycelium and conidia formed Actinomyces 



