ACTINOMYCETEAE 759 



into depths, suggesting coralloid growth. Depth growth greater than sur- 

 face growth, maximum 0.5 cm. in diameter, opaque, white, waxy. Stab growth 

 good on upper two centimeters, growth poorer and colonies smaller below. 

 In broth, growth at bottom, liquid clear, once a mass the size of pea, with 

 cauliflower appearance. Maltose broth is favorable to development. Growth 

 in straw, oats, or hay infusion poor. No growth on gelatin, potato, serum, 

 glucose agar, milk, or egg albumen. 



Actinomyces Taraxeri-cepapi (Sehottmiiller) Dodge, n. comb. 



lSt)'cptot]iri.r Taraxeri-cepapi Schottmiiller. Derm. Woch. 58: Erganzungs- 

 heft: 89-103, 1914. 



Pound in fever simulating rat-bite fever, following bite by Taraxerus 

 cepapi, the African squirrel. 



In pus, straight or curved cells, branching not seen, very slender. Organ- 

 ism gram-negative. 



No growth on common media, slight growth in broth, to which 5 c.c. of 

 patient's blood was added. 



Actinomyces Putorii (Dick & Tunnicliff) Dodge, n. comb. 



Streptothrix Putorii Dick & Tunnicliff, Jour. Infect. Dis. 23: 183-187, 1 

 fig., 1918. 



Isolated from blood in case of fever following bite by weasel. Not patho- 

 genic to laboratorj^ animals. 



Hyphae slender, curved, branching. Ball and club-shaped swellings. 

 Gram-negative, not acid-fast. A facultative anaerobe, growth better under 

 aerobic conditions. 



Growth on blood agar or Loeffler's blood serum as discrete, colorless or 

 grayish white, pinpoint colonies with elevated, sharp margins, dull at first 

 then glistening. Medium not changed. Growth in glucose blood agar more 

 profuse, grayish yellow. In ascitic broth, slight, whitish, flocculent growth. 

 Growth also in inulin, salicin, maltose, mannite, sucrose, raffinose, lactose, or 

 glucose broths to which ascitic fluid is added in the proportion of 1 :4. No 

 change in reaction. Only slight growth in plain or dextrose broth or milk; 

 in the former a yellowish white, glistening growth appears. 



Actinomyces Muris-ratti (Schottmiiller) Nannizzi, Tratt. Micopat. Umana 

 [Pollacci] 4: 51, 1934. 



Streptothrix Muris-ratti Schottmiiller, Derm. Woch. 58: Erganzungsheft, 

 77-103, 1914; Blake, Jour. Exp. Med. 23: 39-60, Pis. 8-14, 1916. 



Nocardia Mnris Froilano de Mello & Pais, Arq. Hig. Pat. Exot. 6: 183, 1918. 



Isolated from sodoku or rat-bite fever, also in bronchopneumonia of rats. 

 Reported by Tunnicliff as pathogenic to white rats, not to guinea pigs or rab- 

 bits. Reported by Blake (1916) from an old woman with sodoku. He reports 

 it pathogenic to rabbits. 



Hyphae slender, tangled, branching, curved in waves or straight, staining 

 homogeneously. Spore chains, of varying length and staining capacities, break 



