Gelatin: No liquefaction. Deep agar colonies: Lenticular. Slight amount of gas is produced. Glucose broth: Abundant turbidity. Acid- ified. Gas is produced. Peptone broth: Very poor growth. Milk: No coagulation. Coagulated proteins not attacked. Indole is produced. Acid from glucose, fructose, galactose, arabinose and xylose. Ammonia, hydrogen sulfide, aldehydes, volatile amines, acetylmethylcarbinol and acetic, butyric and lactic acids are pro- duced. Nitrites not produced from nitrates. Neutral red not reduced; phenosafranin reduced temporarily. Anaerobic. Optimum temperature, between 33° and 37° C. Optimum pH, between 6.0 and 8.0. Not pathogenic for guinea pigs or mice. Source: Isolated from dental suppura- tions and from cases of purulent pleurisy. Habitat: Found in the human mouth. Rather common. Genus V. Cillobacterium Prevot, 1938.* (Ann. Inst. Past., 60, 1938, 294.) Cil.lo.bac.te'ri.um. L. v. cillo to move, to put in motion; Gr. neut.dim.n. bacterium a small rod; M.L. neut.n. Cillobacterium motile rodlet. Straight or curved rods. Motile by means of peritrichous flagella. Gram-positive. Carbo- hydrates are attacked, the end-products of fermentation including some of the following: formic, acetic, butyric, lactic and valerianic acids. Anaerobic. May be pathogenic. Found in the intestinal tracts and in lesions of warm-blooded animals; also found in soil. The type species is Cillobacterium monilijorme (Repaci) Prevot. Key to the species of genus Cillobacterium. I. Does not liquefy gelatin. II. Liquefy gelatin. A. Milk not coagulated. 1. Neutral red not reduced. 2. Neutral red reduced. 1. Cillobacterium moniliforme. 2. Cillobacterium endocarditidis. 3. Cillobacterium meningitidis. B. Milk coagulated and digested. 1. Acid and gas produced from glucose. a. Deep agar colonies circular with small amount of gas produced. 4. Cillobacterium tenue. aa. Deep agar colonies lenticular with abundant amount of gas produced. 5. Cillobacterium vmltijorme. 2. Carbohydrates not attacked. 6. Cillobacterium combesii. 1. Cillobacterium moniliforme (Re- paci, 1910) Prevot, 1938. (Bacillus monili- formis Repaci, Compt. rend. Soc. Biol., Paris, 61, 1910, 216; Pr6vot, Ann. Inst. Past., 60, 1938, 296.) mo.ni.li.for'me. L. noun monile a neck- lace; L. noun forma shape; M.L. adj. monili- formis necklace-shaped. Straight rods, 0.7 by 3.0 to 4.0 microns, occurring singly or in pairs. Possess spindle- shaped swellings and metachromatic gran- ules. Motile. Gram-positive.
- Arranged by Mrs. Eleanore Heist Clise, Geneva, New York, March, 1955.
