314 GENERAL SYSTEMATIC BACTERIOLOGY 



do not show any marked tendency to split sugars. Slender Gram-negative rods 

 with oval terminal spores. Colonies in deep agar lenticular, may show an areola 

 of fine radiations. Frequently found in moulds, not pathogenic for guinea- 

 pigs. 



Type species F. cochlearius {Bacillus cochlearius Douglas, Fleming and Cole- 

 brook) as described by the Committee. The type is highly motile and it split 

 none of the carbohydrates in which it was grown. It was described as bacillus 

 III type C by Mcintosh. 



Flexnerella. The first subgenus of the genus Shigella named by 

 Castellani and Chalmers (1919, p. 937). It differs from the second 

 subgenus (Shigella) in that mannitol is fermented. It is subdivided 

 into two groups, the Flexner group and the Pseudodysentery group. 

 Later (1920, p. 606) two species are listed. The type is Shigella 

 flexneir Castellani and Chalmers. 



Fluormonas. A generic name proposed by Orla-Jensen (1921, p. 

 271) to include his earlier described Denitromonas and Liguido7nonas. 

 He says: 



As the property of liquefying gelatin also cannot be adopted as a generic 

 character but only as a species character, I think it would be best to group 

 together my earlier genera Denitrovionas and Liquidomonas in a single genus, 

 which can be conveniently termed Fluormonas, as the bacteria of this group are 

 ordinarily fluorescent. I cannot agree to call this genus Fseudomonas merely out 

 of regard for so-called priority, as each and all of the bacteria which belong to the 

 order under consideration are really Pseudomonades as well. 



No species is named. 



Fusiforminae. A subtribe named by Buchanan (1918, p. 44) to 

 include the single genus Fusiformis. 



Fusiformis. A generic name proposed by HoeUing (1910, p. 240) to 

 include the fusiform bacteria. He concludes that those organisms us- 

 ually included in the name Bacillus fusiformis should not be placed in 

 the genus Bacillus. He mentions as species Fusiformis dentium, F. 

 muris, F. termitidis. He describes the morphology of the last named 

 species in detail. He states that the protoplasm of the young organ- 

 isms is relatively homogeneous, sometimes staining more intensely 

 toward the pointed ends. The larger cells sometimes show an alveolar 

 plasma structure. The nuclei are in general stained dark. The nuclei 

 in some are oval and show a definite structure, others show, especially 

 in mononucleate cells, as a broad band. Evidently the Bacillus fusi- 

 formis is Fusiformis termitidis. The name is accepted by Dobell 

 (1911, p. 486). 



