FAMILY ACHKO.MOBACTERIACKAE 427 



153.) From sewage, water and dust. thias). See Alanual, 4th ed., 1934, 222 



See Manual, oth ed., 1939, 517 for a de- for a description of this organism, 



scription of this organism. Achromohacter visco-sijmbioticum (Bu- 



Achromobacter venenosum (Vaughan) chanan and Hammer) Bergey et al. 



Bergey et al. (Bacillus venenosus {Bacillus visco-sijmhioticum Buchanan 



Vaughan, Amer. Jour. Med. Sci., 10^, and Hammer, Iowa Agr. Exp. Sta. Res. 



1892, 191; Bergey et al., Manual, 1st ed., Bull. 22, 1915, 261 ; Escherichia symbiot- 



1923, 141.) From water. Gibbons ica Bergey et al.. Manual, 1st ed., 1923, 



(Contrib. to Canadian Biol, and Fish., 202; Bergey et al., 3rd ed., 1930, 209.) 



8, No. 22, 1934, 279) reports this species From ropy milk. See Manual, 4th ed., 



from the slime on cod (Gadus callarias) 1934, 223 for a description of this organ- 



and the feces of dogfish (Squalus acan- ism. 



Genus III. Flavobacterium Bergey et al.* 

 (Bergey et al.. Manual, 1st ed., 1923, 97; Flavobacler Stewart, Jour. Mar. Biol. 



Assoc. Un. Kingdom, 13, 1932, 41.) From Latin^acw.s, yellow and bacterium, a small 



rod. 



Rods of medium size forming a yellow to orange pigment on culture media. Motile 



with peritrichous flagella or non-motile. Generally Gram-negative. Characterized 



by feeble powers of attacking carbohydrates, occasionally forming acid from he.xoses 



but no gas. Occur in water and soil. 



The type species is Flavobacterium aquatile (Frankland and Frankland) Bergey 



et al. 



Key to the species of genus Flavobacterium. 



I. Non-motile, and slow or no liquefaction of gelatin. 

 A. Litmus milk unchanged. 



1. Nitrites not produced from nitrates. 



1. Flavobacterium aquatile. 



II. Motile with peritrichous flagella. 

 A. Gelatin liquefied. 



1. Litmus milk unchanged. 



a. Nitrites produced from nitrates. 



2. Flavobacterium diffusum. 



3. Flavobacterium okeanokoites . 



4. Flavobacterium rigense. 

 aa. Nitrites not produced from nitrates. 



b. From fresh water. 



bb. From sea water. 



5. Flavobacterium devorans. 



6. Flavobacterium viarinotypicum. 



7. Flavobacterium marinovirosum. 



8. Flavobacterium halohydrum. 



9. Flavobacterium neptunium. 



* Partially rearranged before his death by Prof. D. H. Bergey, Philadelphia, 

 Pennsylvania, Sept., 1937; further revision by Prof. Robert S. Breed, New York 

 State Experiment Station, Geneva, New York, June, 1945. 



