FAMILY PARVOBACTERIACEAE 



563 



No acid or gas from glucose, sucrose, 

 lactose, maltose or mannitol. 



No H2S produced (Toplej' and Wilson). 



Catalase positive (Topley and Wilson). 



Ammonia formed from urea and as- 

 paragine. 



Optimum temperature 37°C. Ivilled 

 in twenty minutes at 55°C. 



Aerobic, facultative. 



Source : From dogs affected with dis- 

 temper. 



Habitat: Causes acute, often fatal, 

 pneumonia in dogs generally as a second- 

 ary invader in distemper. Also patho- 

 genic for cats, rabbits, guinea pigs, fer- 

 rets, white rats and monkeys. Some- 

 times occurs in man. 



Appendix: The following are recorded 

 in the literature discussing this genus: 



Brucella evansi Pacheco (Revista da 

 Sociedade Paulista de Med. Vet., S, 



1933, 9) is a name applied to a group of 

 thirteen cultures referred to by Evans 

 (Jour. Inf. Dis., 23, 1918, 354) as abortus- 

 like bacteria although she definitelj' in- 

 dicates that these cultures do not agree 

 with each other in their biochemical 

 characteristics (loc. cit., Table 4, p. 361). 



The binomials Brucella -paramelitensis , 

 Brucella paraabortus and Brucella para- 

 suis have been used for inagglutinable 

 strains of these three species which are, 

 according to Topley and Wilson (Princip. 

 Bact. and Immun., 2nd ed., 1936, 632), 

 now known to be merely rough variants, 

 not deserving to be so named. 



Micrococcus paramelitensis Negr^ and 

 Raymond. (Compt. rend. Soc. Biol., 

 Paris, 72, 1912, 791 and 1052.) 



Micrococcus pseudomelitensis Sergent 

 and Zammitt, 1908. Exact reference not 



