Source: Isolated from pus from a dental abscess. Habitat: Unknown. 17. Eubacteriuni disciformans (Mas- sini, 1913) Prevot, 1938. (Bacillus discifor- mans IMassini, Ztschr. f. gesammte Exp. Med., 2, 1913, 81; Prevot, Ann. Inst. Past., 60, 1938, 295.) dis.ci. for 'mans. Gr. noun discus a disc; L. part. adj. formans forming; M.L. adj. disciformans disc-forming. Small, ovoid rods, 0.3 to 0.7 by 0.5 to 0.7 micron, with rounded ends, occurring singly, in pairs and in small masses. Non- motile. Gram-positive (decolorizing easily). Gas not produced in culture media. Gelatin: No growth. Deep lactose agar colonies: Punctiform, then lenticular, forming a disc of colonies in the upper part of the medium. No gas produced. Glucose broth agar: Acidified. Glucose broth: Fine, flak}' growth which precipitates, leaving the medium clear. Milk: Slowlj- coagulated. Indole not produced. Acid but no gas from glucose, fructose, maltose, lactose, sucrose, galactose, arabi- nose, mannitol and starch. Ammonia and formic, acetic and propionic acids are produced. Nitrites not produced from nitrates. Neutral red not reduced. Anaerobic. Optimum temperature, 37° C. Killed at 56° C. Pathogenic for man, rabbit, guinea pig and mouse. Source: Isolated from cases of fetid sup- purations in empyema, pulmonary gan- grene, liver abscess and dermatosis. Habitat: Found in the respiratory sys- tem, the liver and the skin. Common. 18. Eubacterium ininutum (Hauduroy et al., 1937) Prevot, 1938. (Bacillus an- aerobicus minutus Tissier, Recherches sur la fiore intestinale des nourissons, Paris, 1900; Bacteroides minutus Hauduroy et al.. Diet, d. Bact. Path., 1937, 64; Prevot, Ann. Inst. Past., 60, 1938, 295.) mi.nu'tum. L. part. adj. minutus small (literally, diminished). Very slender, straight rods, 2.0 to 4.0 microns in length, with rounded ends, oc- curring singly or in pairs. Non-motile. Gram -positive. Gas not produced in culture media. Deep agar colonies: Delicate, irregular, ovoid. Glucose broth: Poor growth. Slightly turbid. Anaerobic. Optimum temperature, 37° C. Pathogenic for mice. Source: Isolated from a case of diarrhea in an infant. Habitat : Found in the intestines of breast- fed infants. Uncommon. 19. Eubacterium lentuni (Eggerth, 1935) Prdvot, 1938. (Bacteroides lentus Eg- gerth, Jour. Bact., SO, 1935, 280; Prevot, Ann. Inst. Past., 60, 1938, 295.) len'tum. L. adj. lentus slow. Short, ovoid rods, 0.5 to 1.5 by 2.0 to 3.0 microns, occurring in chains. Pleomorphic, occurring as coccoid forms and as spindles up to 6.0 microns in length. Non-motile. Gram-positive. Gas not produced in culture media. Gelatin: No liquefaction. Deep blood agar colonies: Small, 0.25 to 0.75 mm in diameter. Not hemolytic. Milk: No coagulation. Coagulated proteins not attacked. Indole not produced. Hydrogen sulfide produced in trace amounts. Carbohydrates not attacked. Anaerobic. Optimum temperature, 37° C. Not pathogenic. Source: Isolated from human feces. Habitat: Found in normal human feces. Common. 20. Eubacterium poeciloidcs (Roger and Gamier, 1906) Prevot, 1938. (Bacillus poeciloides Roger and Garnier, Bull, et Mem. Soc. Med. des Hopitaux Paris, 2, 1906, 870; Prevot, Ann. Inst. Past., 60, 1938, 295.)
