SURVEY OP CLASSIFICATIONS OP BACTERIA 17 



Order IV. Phycobacteria 



Genus a. Leptothrix 



b. Clonothrix 



c. Cladothrix 



d. Crenolhrix 



e. Phragmidioihrix 



Appendix Genera Gallionella, Spirophyllum, Nodofolium 

 Order V. Mycobacteria 



Family 1. Mycobacteriaceae 



Genus a. Cory neb acterium 

 b. Mycobacterium 

 Family 2. Actinomycetaceae 

 Genus a. Actinomyces 

 b. Actinococcus 

 Order VI. Myxobacteria 



Familj^ 1. Myxobacteriacene 

 Genus a. Myxococcus 



b. Chondromyces 



c. Polyangium 



Lehmann and Neumann (Bakt. Diag., 2 vols., 7th ed., Miinchen, 1926-27 ; 

 Breed, Eng. trans., New York, 1931) developed their first simple and much 

 used outline classification, dra\vn up in 1896, in later editions of their 

 Determinative Bacteriology. The 1927 Lehmann and Neumann outline 

 is as follows: 



Class I. Schizomycetes 



Order I. Schizomycetales 

 Family 1. Coccaceae 



Genus a. Streptococcus 



b. Sarcina * 



c. Micrococcus 

 Sub-genus a. Diplococcus 



b. (Gram-positive group) 

 Family 2. Bacleriaceae 

 Genus a. Bacterium 



Sub-genus a. Nitrosomonas 



b. Nitrobacter 



c. Rliizobium 



d. Haemophilus 



e. Brucella 



f. Pasteurella 



g. (Glanders and dysenterj' group) 

 h. (Photogenic group) 



i. (Aerogenes group) 



j. Encapsulatus 



k. (Typhoid group)* 



1. Salmonella 



m. (Coli group)* 



* In a footnote under these groups, the authors refer to the names given by Castel- 

 lani and Chalmers. 



