94 GENERAL SYSTEMATIC BACTERIOLOGY 



I. Milk not clotted: 



(.a) Glucose and lactose not fermented. 



Genus 1. Alcaligenes Castellan! and Chalmers, 1918 



(b) Glucose partially fermented with the production of acid and no 



gas; lactose not fermented: 



1. Motile. .. .Genus 2. .©feeriAws Castellani and Chalmers, 1918 



2. Non-motile. 



Genus 3. Shigella Castellani and Chalmers, 1918 



(c) Lactose and glucose partially fermented with the production of 



acid, but no gas. 



Genus 4. Dysenteroides Castellani and Chalmers, 1918 

 II. Milk clotted: 



Glucose partially fermented with the production of acid, but no gas; 

 lactose not fermented (no gas in any sugar). 



Genus 5. Lankoides Castellani and Chalmers, 1918 

 B. Glucose completely fermented with the production of acid and gas ; lactose not 

 fermented: 



I. Milk not clotted. 

 Genus 6. Salmonella Lignieres, emendavit Castellani and Chalmers, 1918 



II. Milk clotted Genus 7. Balkanella Castellani and Chalmers, 1918 



C Glucose completely fermented with the production of acid and gas; lactose 



partially fermented with the production of acid and no gas: 



I. Milk not clotted. .Genus 8. T'Fesenfcer^us Castellani and Chalmers, 1918 



D. Glucose and lactose completely fermented with the production of acid and gas : 



I. Milk not clotted. .Genus 9. Enteroides Castellani and Chalmers, 1918 



II. Milk clotted. .Genus 10. Escherichia Castellani and Chalmers, 1918 



Key to the Subgenera of the Genus Shigella 



A. Mannitol fermented Subgenus Flexnerella (Flexner group sensu lata) 



I. Maltose fermented Flexner group 



II. Maltose not fermented Pseudodysentery group. 



B. Mannitol not fermented Subgenus Shigella 



Key to the Tribe Pasteurelleae 

 One genus only: Pasteurella. 



Key to the Genera of the Tribe Proteae 



A. Rapid gelatine liquefiers; do not ferment lactose; mostly Gram-positive 



Proteus 



B. Slow gelatine liquefiers; ferment lactose; Gram-negative. 



Cloaca 



Key to the Tribe Bacteridieae 

 One genus only: Bacteridium. 



Key to the Tribe Graciloideae 

 One genus only: Graciloides. 



