FAMILY X. LACTOBACILLACEAE 



567 



Gas produced in culture media. 



Gelatin: No liquefaction. 



Deep agar colonies: Lenticular, 2 to 3 mm 

 in diameter. Abundant gas is produced. 

 Aromatic odor. 



Glucose broth: Flaky growth which pre- 

 cipitates forming a viscous mass. Gas is 

 produced. 



Milk: No coagulation. 



Coagulated proteins not attacked. 



Indole produced in trace amounts. 



Acid and gas from glucose, fructose, galac- 

 tose and lactose. 



Ammonia, alcohol, acetone, acetylmethyl- 

 carbinol and formic, butyric and lactic 

 acids are produced. 



Nitrites not produced from nitrates. 



Neutral red reduced. 



Anaerobic. 



Optimum temperature, between 37° and 

 41° C. 



Pathogenic for guinea pigs, causing death 

 in 8 days. 



Source: Isolated from a case of pulmonary 

 gangrene; also from soil from Equatorial 

 Africa. 



Habitat: Found in the human respiratory 

 system. Uncommon. 



2. Cillobacterium endocarditidis Pre- 

 vot, 1938. (Bacille BG, Routier and Braun- 

 berger, Compt. rend. Soc. Biol., Paris, 115, 

 1934, 611; Cillobacterium endocarditis (sic) 

 Prevot, Ann. Inst. Past., 60, 1938, 296.) 



en.do.car.di'ti.dis. Gr. pref. endo within; 

 Gr. noun cardia heart; Gr. suffix -itis dis- 

 ease of; M.L. noun endocardium heart lin- 

 ing; M.L. gen.n. endocarditidis of endo- 

 carditis. 



Pleomorphic rods. Actively motile. Gram- 

 positive. 



Gas produced in culture media. 



Gelatin: Liquefaction in 2 to 5 days. 



Deep agar colonies: Lenticular. Gas is 

 produced. 



Glucose broth: Turbid. Sediment. Gas is 

 produced. 



Peptone broth: Poor growth. 



Milk: No change. 



Coagulated proteins not attacked. 



Acid and gas from glucose, fructose, malt- 

 ose, sucrose and arabinose. 



Neutral red not reduced. 



Anaerobic. 



Optimum temperature, 37° C. 



Toxin is produced. 



Pathogenic for guinea pigs, causing death 

 in 2 to 6 days. 



Source: Isolated from the blood in a case 

 of febrile endocarditis. 



Habitat: Probably the natural body cavi- 

 ties of man. Uncommon. 



3. Cillobacterium meningitidis Prevot, 

 1938. (Stamm S.V., Ghon, Mucha and 

 Miiller, Cent. f. Bakt., I Abt., Orig., 41, 

 1906, 145 and 693; Cillobacterium meningitis 

 (sic) Prevot, Ann. Inst. Past., 60, 1938, 297.) 



me.nin.gi'ti.dis. Gr. fem.n. m,eninx, me- 

 ningis the membrane enclosing the brain; 

 M.L. fem.n. meningitis inflammation of the 

 meninges; fem. gen.n. meningitidis of menin- 

 gitis. 



Pleomorphic rods, occurring sometimes 

 as ovoids, 1.5 to 3.5 microns long, with 

 rounded ends, and at other times as fila- 

 ments with spindle-shaped swellings. Ac- 

 tively motile. Show bipolar staining. Gram- 

 positive. 



Gas produced in culture media. 



Gelatin: Cloudy turbidity. Slow liquefac- 

 tion. Gas is produced. 



Deep agar colonies: Mulberry-like, sur- 

 rounded by small, satellite colonies. Gas is 

 produced. 



Glucose broth: Turbid. Flaky sediment. 

 Gas is produced. 



Peptone broth: Turbid. Flaky sediment. 



Milk: No coagulation. Gas is produced. 



Coagulated proteins not attacked. 



Indole is produced. 



Hydrogen sulfide is produced. 



Ethanol and butyric, acetic and lactic 

 acids are produced. 



Neutral red reduced. 



Anaerobic. 



Grows at temperatures from 22° to 37° C. 



Grows at pH 7.8 to 8.5. 



Pathogenic for guinea pigs and rabbits. 



Source: Isolated from a fatal case of puru- 

 lent meningitis of otic origin. 



Habitat: Unknown. 



4. Cillobacterium tenue (Bergey et al., 

 1923) Clise, comb. nov. (Bacillus tenuis spatu- 

 liformis Distaso, Cent. f. Bakt., I Abt., 



