426 



ORDER IV. EUBACTERIALES 



berg et al., Les Microbes Ana^robies, 1937, 

 720). 



Nitrites not produced from nitrates. 



Anaerobic. 



Optimum temperature, 37° C. 



Pathogenicity: Some strains produce sub- 

 cutaneous abscesses in rabbits, guinea pigs 

 or mice. 



Source and habitat: From acute appen- 

 dicitis, pulmonary gangrene, abscesses of 

 the urinary tract and septicemias in man. 



2. Bacteroides furcosus (Veillon and 

 Zuber, 1898) Hauduroy et al., 1937. (Bacillus 

 furcosus Veillon and Zuber, Arch. Med. 

 Exp. et Anat. Path., 10, 1898, 517; Hauduroy 

 et al.. Diet. d. Bact. Path., 1937, Ql;Ristella 

 furcosa Prevot, Ann. Inst. Past., 60, 1938, 

 291.) 



fur.co'sus. L. adj. furcos^is forked. 



Small rods with forked ends. Non-motile. 

 Gram-negative. 



Gelatin: No liquefaction. 



Agar: Deep colonies very small, trans- 

 parent, regular, yellowish. No gas. 



Blood agar: Small, moist colonies with 

 irregular edges. 



Broth: Slow growth; fine precipitate; 

 little gas with sourish, fetid odor. 



Milk: No coagulation. 



Coagulated egg white not digested. 



Coagulated serum not digested. 



Acid and gas from glucose, maltose, su- 

 crose and mannitol. No action on lactose 

 or inulin. 



Anaerobic. 



Optimum temperature, 37° C. 



Pathogenicity: Produces subcutaneous 

 abscesses in guinea pigs. 



Source: Isolated from cases of appendi- 

 citis and from lung abscesses. 



Habitat: Found in cases of appendicitis 

 and similar infections in man. 



3. Bacteroides perfoetens (Tissier, 

 1905) Hauduroy et al., 1937. (Cocco-Bacillus 

 anaerohius perfoetens Tissier, These M6d., 

 Paris, 1900, 70; Coccohacillus perfoelans 

 (sic) Tissier, Ann. Inst. Past., 19, 1905, 110; 

 Hauduroy et al.. Diet. d. Bact. Path., 1937, 

 67; Risiella perfoetens Prdvot, Ann. Inst. 

 Past., 60, 1938,291.) 



per.foe'tens. L. pref. per very; L. part. 



adj. foetens stinking; M.L. adj. perfoetens 

 very stinking. 



Small, ellipsoidal rods, 0.6 to 0.8 by 0.8 

 to 1.0 micron, occurring singly, in pairs, in 

 short chains or in irregular groups. Non- 

 motile. Gram-negative. 



Gelatin: No growth. 



Glucose agar: Deep colonies lenticular, 

 with bubbles of fetid gas. 



Glucose broth: Rapid growth, with pow- 

 dery precipitate and fetid gas. 



Milk: Unchanged. 



Indole not produced. 



Acid from glucose and sucrose. Some 

 strains produce acid from lactose. 



Anaerobic. 



Optimum temperature, 37° C. 



Not pathogenic. 



Source: Isolated from the intestines of 

 infants with diarrhoea. 



Habitat: Found in the intestinal tract of 



4. Bacteroides incommunis Eggerth 

 and Gagnon, 1933. (Eggerth and Gagnon, 

 Jour. Bact., 25, 1933, 402; Ristella incom- 

 munis Pr6vot, Ann. Inst. Past., 60, 1938, 

 291.) 



in.com.mu'nis. L. adj. incommunis not 

 common . 



Rods, 0.5 to 1.5 by 1.0 to 3.0 microns, 

 occurring singly. Non-motile. Stain solidly. 

 Gram-negative. 



Gelatin: No liquefaction. 



Blood agar colonies: Elevated, slightly 

 yellowish, 1 mm in diameter. One strain 

 formed soft colonies; the other was stringy 

 when emulsified. 



Broth: Growth is diffuse. 



Milk: Acidified but not coagulated; 

 coagulates promptly on boiling. 



Indole not produced. 



Hydrogen sulfide is produced. 



Acid and a small amount of gas from 

 amygdalin, arabinose, cellobiose, dextrin, 

 fructose, galactose, glucose, inulin, lactose, 

 maltose, mannose, raffinose, rhamnose, 

 sucrose and xylose. One strain fermented 

 glycogen and starch. No action on esculin, 

 glycerol, mannitol, melezitose, salicin, 

 sorbitol or trehalose. 



Nitrites not produced from nitrates. 



Peptone: No gas. 



