32 MANUAL OF DETERMINATIVE BACTERIOLOGY 



Family VII. Parvobacieriaceae 

 Genus 1. Brucella 



2. Pasteur ella 



3. Hemophilus (including Dialister) 

 Family VIII. Bacteriaceae 



Unclassifiable genera including Alcaligenes 

 and Protaminobacier ; some species from 

 each of the following genera, Achromobac- 

 ter, Chromobacterium, Cellulomonas, Bacter- 

 oides, Flavobacterium, Phytomonas, Pseudo- 

 monas, Serratia; and three species from the 

 Family Nitrobacteriaceae. 



One of the generic terms used in this outline is new, i.e., Enterohacter. 

 Two other generic terms, Fluorescens and Erythrohacterium, are proposed 

 incidentally (p. 284). The first includes the peritrichous forms included in 

 the Manual under Pseudomonas and the second includes those red, non- 

 spore-forming rods that are not included in Serratia. In another footnote 

 (p. 281) a substitute, Virgula, is suggested for Enterohacter. Emphasis is 

 placed on sporulation, Gram stain, and oxygen demand as the most im- 

 portant characters aside from cell form and flagellation. 



Prevot, as an outgrowth of his studies on anaerobes with Weinberg 

 (Weinberg, Nativelle and Prevot, Les microbes anaerobies, 1937, 1186 pp., 

 Paris), has written a series of papers in which he has developed a classifica- 

 tion of anaerobic bacteria (Ann. Sci. Nat., 10 Ser., 15, 1933, 23-260; Ann. 

 Inst. Past., 60, 1938, 285-307; 61, 1938, 72-91; 64, 1940, 117-125). The 

 conclusions reached in these studies are summarized in his Manual de Clas- 

 sification et de Determination des Bacteries Anaerobies, Monographic de 

 ITnstitut Pasteur, Paris, 1940, 223 pp. He regards the bacteria as com- 

 prising a kingdom, Schizomyceles, intermediate bfetween the animal and 

 plant kingdoms and notes the presence of strict anaerobes in at least three 

 of the seven orders recognized in the 5th edition of the Manual. These 

 orders he regards as classes. The genus Bacteroides Castellani and Chalm- 

 ers (Manual of Trop. Med., 3rd ed., 1919, 959) type species, Bacteroides 

 fragilis, is dropped (Ann. Inst. Past., 60, 1938, 288), and several new terms 

 are proposed for the organisms included by Castellani and Chalmers and 

 later investigators in the genus. Among the new generic names is Ristella 

 which is based on Ristella fragilis, the species used by Castellani and 

 Chalmers as the type species for Bacteroides. 



The complete outline classification developed bj^ Prevot in his Mono- 

 graph (loc. cit., p. 17) is given below: 



Kingdom. Schizomyceles Nageli 

 Class I. Eubacteriales 



Sub-Class I. Non sporogenous Eubacteriales 

 Order I. Micrococcales 



