GENERAL SYSTEMATIC BACTERIOLOGY 531 



Since that time the name has not been used except as a casual name. 

 Vuillemin (1913, p. 526) designates this as a form genus to be pre- 

 served. 



The generic name is probably invalid because not based upon pure 

 culture. 



Zopfeae. A name proposed by Winslow et al. (Committee Soc. 

 Am. Bact., 1920, p. 209) for the third tribe of the family Bacteriaceae 

 with the following description: "Gram-positive rods, growing freely 

 on artificial media. Not attacking carbohydrates." 



The single genus is Zopfius. 



The tribe is included by Bergey et al. (1923, p. 193) as the fifth 

 in the family Bacteriaceae. 



The correct spelling of this name probably is Zopfieae. 



Zopfiella. A genus proposed by Trevisan (1885, p. 4) with the 

 species Zopfiella tumescens, (Bacillus tumescens). The description 

 given is as follows: 



Tre stadi di sviluppo vegetativo: 1. Filamenti. 2. Bacilli. 3. Cocchi. 

 Filamenti (stadio protoplastico tipico) cilindrici, articolati, micolori, diritti. 

 Bacilli (stadio transitorio) cilindrici, inarticolati, filiformi: macrobacilli e micro- 

 bacilli. Cocchi (stadio finale) derivati da microbacilli, d apprima in brevi monili, 

 indo liberi. Spore provenienti. 



The name was later abandoned (De Toni and Trevisan, 1889, p. 

 972) becoming a synonym of Bacillus. 



Zopfius. A generic name proposed by Wenner and Rettger (1919, 

 p. 334). The generic description is summarized by Enlows as follows: 



Cells rod-shaped, usually about 0.8 by 3.5/i in size, have somewhat rounded 

 ends, and in young cultures occur in long evenly curved chains. Gram-positive. 

 Motile by means of peritrichiate flagella. No spores. No capsules. Faculta- 

 tive anaerobes. No visible change in litmus milk. Gelatin not liquefied and none 

 of the carbohydrates are attacked. A more or less characteristic spider-web 

 growth on agar and gelatin plates, but inoculations in the condensation water of 

 agar slants do not result in a spreading over the surface such as occurs in the 

 genus Proteus. The authors include here Bacterium zopfii Kurth, and Proteus 

 zenkeri Hauser, which they regard as identical, after a study of a number of strains 

 of each type finding few differentiating properties. See Proteus (Hauser) em. 

 Wenner and Rettger. The name Zopfius having been chosen as the name for 

 new genus, the type species (by virtual tautonomy) would be Zopfius zopfii 

 (Kurth) Wenner and Retter. 



Winslow et al. (Committee Soc. Am. Bact., 1920, p. 210) include 

 this as the single genus of the tribe Zopfece, with the following character- 

 ization : 



