FAMILY CORYXEBACTERIACEAE 



411 



Optimum pH 7.6. 



Microaerophilic. 



Optimum temperature 37 °C. 



Source : From cases of swine erysipelas. 



Habitat : The cause of swine erysipelas. 

 Transmissible to gray and white mice, 

 rabbits and pigeons. Has been trans- 

 mitted to man by accidental inoculation. 



2. Erysipelothrix muriseptica (Fliigge) 

 Rosenbach. (Bacillus der Mausesepti- 

 kamie, Koch, Mittheil. a. d. kaiserl. 

 Gesundheitsamte, 1, 1881, 93; Bacillus 

 insidiosus Trevisan, Car. di ale. nuov. 

 gen. di Batter., 1885, 10; Bacillus muri- 

 septicus Fliigge, Die Mikroorganismen, 

 2 Aufl., 1886, 250; Bacillus murimis 

 Schroeter, in Cohn, Kryptogamen Flora 

 V. Schlesien, 3, 1886, 162; Bacterium 

 murisepticum Migula, in Engler and 

 Prantl, Die natiirl. Pflanzenfam., 1, la, 

 1895, 24; Mycobacterium murisepticum 

 Chester, Manual Determ. Bact., 1901, 

 353 ; Rosenbach, Ztschr. f . Hyg., 63, 1909, 

 367; Pasteurella muriseptica Bergey et 

 al., Manual, 1st ed., 1923, 265; not 

 Pasturella muriseptica Topley and Wil- 

 son, Princip. Bact. and Immun., 1, 1931, 

 482.) From Latin jnus, muris, a mouse; 

 Greek septicus, putrefying, septic. 



Rods: 0.5 by 0.8 to 1.0 micron, occur- 

 ring singly. Xon-motile. Gram-posi- 

 tive. 



Gelatin colonies: Very small, whitish, 

 dew-like, with indefinite margin. 



Gelatin-stab : Filiform growth in stab, 

 arborescent. Xo liquefaction. 



Agar slant : Very slight, clear, dew-like 

 streak. 



Litmus milk : L'nchanged. 



Potato: Xo growth. 



Indole not formed. 



Xitrites not produced from nitrates. 



Microaerophilic. 



Optimum temperature 37°C. 



Source : From cases of mouse septi- 

 cemia. 



Habitat : In fatal septicemia in white 

 mice following injection of putrid meat 

 infusion. Xot infectious for field mice. 



3. Erysipelothrix erysipeloidis (Leh- 

 mann and Neumann) Rosenbach. 

 (Cladothrix des Erythema migrans, Ros- 

 enbach, Arch. klin. Chirurg.. 36. 1887, 2; 

 Oospora rosenbachi Sauvagais and Ra- 

 dais, 1892, according to Brumpt, Precis 

 de Parasit., Paris, 4th ed., 1927, 1201; 

 Oospora erysipeloidis Lehmann and 

 Xeumann, Bakt. Diag., 1 Aufl., 2, 1896, 

 392; Streptothrix rosenbachii Kruse in 

 Fliigge, Die Mikroorganismen, 3 Aufl., 

 2, 1896, 61; Actinomyces erysipeloidis 

 Lachner-Sandoval, L^eber Strahlenpilze 

 Strassburg, 1898, 64; Discomyces rosen- 

 bachi Gedoelst, Champ. Paras. Homme, 

 1902, 177; Streptothrix erysipeloides Ca- 

 miniti, Cent. f. Bakt., I Abt., Orig., 

 1907, 198; Rosenbach, Ztschr. f. Hyg., 

 63, 1909, 367; Nocardia rosenbachi Cas- 

 tellani and Chalmers, Man. Trop. Med., 

 2nd ed., 1913, 815; Babesia erysipeloides 

 Chalmers and Christopherson, Ann. 

 Trop. Med. and Parasit., 10, 1916, ac- 

 cording to Xannizzi, in PoUacci, Tratt. 

 Micopat. Umana, 4, 1934, 45; Actinomyces 

 rosenbachii Holland, Jour. Bact., 5, 

 1920, 216; Bacterium erysi peloidis Leh- 

 mann and Xeumann, Bakt. Diag., 

 7 Aufl., 2, 1927, 499.) From Greek ery- 

 sipelas, erysipelas; idus, shape, appear- 

 ance. 



Rosenbach {loc. cit.) made a compara- 

 tive study of the three species in this 

 genus and came to the conclusion that 

 they were different, although closely 

 allied to each other. However, Rick- 

 mann (Ztschr. f. Hyg., 64, 1909, 362) 

 concluded that they were identical. 



Source : Isolated by Rosenbach (Ver- 

 handl. d. deutsch. Gesellsch. f. Chirurg., 

 2, 1887, 75) in cases of human erysipe- 

 loid. 



