484 



ORDER IV. EUBACTERIALES 



Acid from glucose, fructose, maltose and 

 sucrose. 



Optimum temperature, 37° C. Grows at 

 22° C. 



Aerobic, facultatively anaerobic. 



Source: Nasopharynx, saliva and sputum. 



Habitat: Mucous membrane of the respi- 

 ratory tract of man. 



Optimum temperature, 37° C; grows well 

 at 22° C. 



Aerobic, facultatively anaerobic. 



Serologically, a homogeneous group. 



Source: Cerebrospinal fluid in cases of 

 meningitis. 



Habitat: Probably mucous membrane of 

 respiratory tract of man. 



5. Neisseria haemolysans Thj0tta and 

 Boe, 1938. (Acta path, et microbiol. Scand., 

 Suppl., 37, 1938, 527.) 



hae.mo'ly.sans. Gr. noun haema blood; 

 Gr. V. lyo to loose; M.L. part. adj. haemoly- 

 sans dissolving blood. 



Spheres, 0.6 to 1.0 micron or more in di- 

 ameter, occurring singly and in pairs with 

 adjacent sides flattened. Type strain shows 

 some very large cells. Gram-negative. 



Blood agar colonies: Smooth, non-chro- 

 mogenic, surrounded by a zone of clear 

 beta hemolysis by the second or third day. 

 Growth slow and delicate. 



Gelatin not liquefied. 



Acid from glucose, fructose, maltose and 

 sucrose, but not from any other carbohy- 

 drate. 



Indole not produced. 



Nitrites not produced from nitrates. 



Aerobic, facultatively anaerobic. 



Source: Bronchial secretions, nasophar- 

 ynx. 



Habitat: Human mucous membrane of 

 the respiratory tract. 



6. Neisseria flavescens Branham, 1930. 

 (U. S. Public Health Service, Pub. Health 

 Reports, 45, 1930, 845.) 



fla.ves'cens. L. v. flavesco to become 

 golden yellow; L. part. adj. flavescens be- 

 coming golden yellow. 



Biscuit-shaped cocci occurring in flat- 

 tened pairs; usually 0.6 to 1.0 micron in di- 

 ameter. Gram-negative. 



Glucose agar: Poor growth. 



Blood agar: Grows well, colonies less 

 noist and less transparent than those of the 

 meningococcus. Develops a golden yellow 

 pigment. Is greenish yellow on Loeffler's 

 blood serum medium. 



Semi-solid agar: Good growth with pel- 

 licle formation. 



No acid from any carbohydrates. 



7. Neisseria caviae Pelczar, 1953. (Neis- 

 seria from guinea pig, Pelczar, Hajek and 

 Faber, Jour. Inf. Dis., 85, 1949, 239; Pelczar, 

 Jour. Bad., 65, 1953,744.) 



ca'vi.ae. M.L. fem.n. Cavia generic name 

 of the guinea pig; M.L. gen. noun caviae of 

 Cavia. 



Spheres, 0.6 to 1.0 micron in diameter, 

 occurring predominantly in pairs with flat- 

 tened sides, though small clusters of cells 

 are present. Gram-negative. 



Trypticase soy agar colonies: Approxi- 

 mately 2 mm in diameter, circular, convex, 

 entire with smooth glistening surface. Con- 

 sistency butyrous, becoming viscid. 



Chromogenesis : Growth on Loefiier's 

 slants is a distinct light caramel to dirty 

 brown color. Distinctly different from the 

 grayish white or yellow to yellowish green 

 chromogenesis of other species in the genus. 



No acid from any carbohydrate. 



Positive oxidase test with para-amino- 

 dimethylaniline monohydrochloride rea- 

 gent. 



Hemolysis: Some strains weakly hemo- 

 lytic against rabbit blood. 



Optimum temperature, 37° C; grows at 

 22° C. 



Aerobic, facultatively anaerobic. 



Source: Isolated from the pharyngeal 

 region of guinea pigs. 



Habitat: Pharyngeal region of guinea 

 pigs and perhaps also in the pharyngeal 

 region of other animals. 



8. Neisseria subflava Bergey et al., 1923. 

 (Chromogenic group III, Elser and Hun- 

 toon, Jour. Med. Res., £0 (N.S. 15), 1909, 

 415; Bergey et al., Manual, 1st ed., 1923, 44.) 



sub.fla'va. L. prefix sub less than, some- 

 what; L. adj. flavits yellow; L. adj. subflaviis 

 yellowish. 



Spheres, 0.6 to 1.0 micron in diameter, 



