734 MEDICAL MYCOLOGY 



No growth on carrot, potato, banana starch, turnip, artichoke or Raulin 

 agar. Grows on gelatin, agar, sugar agars, prune decoction with agar or 

 gelatin. Sabouraud, beef broth, and maltose media are best. On gelatin, small 

 punctiform grayish colony. On carrot, small punctiform colonies, grayish 

 white, then after a week becoming cacoa brown, discrete. Colonies similar on 

 banana, but remain white. In beef broth, a thick mucous deposit, no pellicle. 

 On other liquid media colonies are similar. Milk is coagulated on the second 

 day and then the coagulum digested. Gelatin not liquefied. 



Actinomyces Matruchoti (Mendel) Nannizzi, Tratt. Micopat. Umana [Pol- 

 lacci] 4: 51, 1934. 



Cladothrix Matruchoti Mendel, C. R. See. Biol. 82: 583-586, 2 figs., 1919. 



Isolated from the roots of a decaying tooth with tumefaction. Slightly 

 pathogenic to rabbit on intramuscular injection. 



Hyphae straight or sinuous, variable in length, 100 x 0.3-0.5/i. approxi- 

 mately, nonseptate, generally not branched. Branching false (?). In old cul- 

 tures, hyphae fragment into segments 4-5/x long. Organism a strict aerobe. 

 Gram-positive, not acid-fast. 



On ascitic agar, colonies gray, opaque, irregularly circular, adherent, not 

 over 1 mm. in diameter, central zone elevated, yellowish, slightly umbilicate. 

 Later, periphery becomes transparent and radiate. On potato and carrot, 

 growth poor except in liquid of condensation. No growth on gelatin. In 

 broth and peptone solution, small yellow grains are suspended in the liquid, 

 then fall to the bottom, leaving the liquid clear. Litmus milk becomes red, with 

 lower layer decolorized. Acid formation with glucose, lactose, fructose, su- 

 crose. Milk coagulated, gelatin not liquefied. 



Actinomyces Rodellae Dodge, n. sp. 



Streptothrix sp. Rodella, Centralbl. Bakt. I, 84: 450-461, 1920. 



Isolated from abscesses of the tooth and jaw. 



Hyphae short, branched. Gram-positive and negative. 



On agar, colonies small, irregular, dry, efflorescent. No growth on potato 

 or gelatin. Colonies on serum depressed, wavy, compact, almost leathery, 

 dirty gray, adherent, though whole colony may be removed without breaking. 

 In broth, growth slow with deposit settling and medium clear. In sugar broth 

 as in simple broth, but growth more abundant, granules up to the size of petit 

 pois. Milk is digested and cleared. 



The author identifies his organism with Microm,yces Hofmanni Gruber. 



Actinomyces Chalmersi (Froilano de Mello & St. Antonio Fernandes) 

 Dodge, n. comb. 



Nocardia Chalmersi Froilano de Mello & St. Antonio Fernandes, Mem. 

 Asiatic Soc. Bengal 7: 130, 131, 1919. 



Isolated from saliva of horse. 



Cells 3-5 X 0.5-0.7/x, gram-positive, acid-fast. 



Colonies on agar, dry, granular transparent at first, becoming white with 

 white efflorescence. Similar on glycerol, maltose, and Sabouraud agar. On 



