THE FAMILIES AND GENERA OF THE BACTERIA 211 



cally intestinal parasites of man and the higher animals although 

 several species may occur on plants and one {B. aerogenes) is 

 widely distributed in nature. Many species pathogenic. 

 Type species, B. coli Escherich 1885, p. 518. 



Tribe 5. Lactobacilleae, Nov. Trib. 



Rods, often long and slender, Gram-positive, non-motile, with- 

 out endospores. Usually produce acid from carbohydrates, as 

 a rule lactic. When gas is formed, it is C0 2 without H 2 . The 

 organisms are usually somewhat thermophilic. As a rule micro- 

 aerophilic; surface growth on media poor. 



Genus 7. Lactobacillus Beijerinck 1901b, p. 214 



Synonyms: Disporaf Kern 1882; Tyrothrix? Duclaux 1882 in part; 

 Saccharobacillusf van Laer 1889; Lactobacter Beijerinck 1901; Strepto- 

 bacillus Rest and Khoury 1902; Brachybacterium Troili-Petersson 1903; 

 Caseobacterium Jensen 1909. 



Generic characters those of the tribe. 



The type species is 'Lactobacillus caucasicus (Kern?) Beijerinck. 



Tribe 6. Pasteurelleue, Nov. Trib. 



Gram negative rods, showing bipolar staining. Parasitic 

 forms of slight fermentative power. 



Genus 8. Pasteurella Trevisan 1888, p. 7. 



Synonyms: Octopsisf Trevisan 1885; Coccobacillus Gamaleia 1888, not 

 Coccobacillus Leube 1885; Dicoccia? Trevisan 1889; Diplobacillus? 

 Weichselbaum 1887. 



Aerobic and facultative. Powers of carbohydrate fermenta- 

 tion slight; no gas produced. Gelatin not liquefied. Parasitic, 

 frequently pathogenic, producing plague in man and hemorrhagic 

 septicemia in the lower animals. 



The type species is Pasteurella cholerae-gallinarwn (Fliigge 

 1886) Trevisan. 



