236 MEDICAL MYCOLOGY 



first small islets, resembling a drop of fat, then conflvient but still showing 

 the points of union of the separate islets, the upper portions becoming chalk- 

 white, gas bubbles collecting under the pellicle. In old cultures, the pellicle 

 is compact and tough, brownish or slightly reddish. On other liquid media, 

 the islets are rapidly confluent, the pellicle is vigorous, smooth, white, and 

 glassy, easily sinking to the bottom. Colony folded, center crateriform, upper 

 portions of the fold chalky. Gelatin slowlj' liquefied; sugars fermented; 

 hydrogen sulphide produced in mineral nutrient solutions to which powdered 

 sulphur is added. 



Key to Species 



Glucose fermented, colony white or brownish. P. Bahesalama. 



Glucose, galactose, and sucrose fermented, colony white. P. vesica. 



Glucose and lactose fermented, colony yellow to brick red. P. Tanakae. 



Glucose and mannite fermented, colony grayish. P. fecale. 



Glucose, mannite, lactose, and sucrose fermented. P. Mazsae. 



Pseudomyco derma Rabesalama (Fontoynont & Boucher) Dodge n. comb. 



Mycoderma Bahesalama Fontoynont & Boucher, Ann. Derm. Syphiligr. 

 VI, 4: 330-338, Figs. 7, 8, 1922. 



Geotrichuni Bahesalama Basgal, Contr. Estudo Blastomicoses pulmonares 

 50, 1931. 



Isolated from abscess of lung with hemoptysis. Abscesses on rabbit heal 

 spontaneously. Retroculture negative. 



Fungus produces rods with square ends, 20-25 x 4-4.5/a, filaments up to 

 IGOyx in length, 3/a in diameter, terminal cells sometimes long and pointed, 

 forming greatly branched holdfasts in contact with glass of culture vessel. 

 On second day floating rods detach from filaments. 



On glucose agar, colony shows on third day, center 3-4 mm., elevated, with 

 white rays. "Poor" agar as above, but rays raised from surface of agar. 

 Maltose agar, same as glucose, but base gray "star" brown. On potato, cul- 

 ture is light, velvety, same color as medium. Potato glycerol, white, dry 

 lumpy. Gelatin glucose, colony white powdery with very slow liquefaction 

 after 5 months. Glucose broth, uniformly turbid with eventual formation of 

 thick pellicle, turbidity settles, finally also pellicle; on shaking, gas is evolved 

 (fermentation of glucose). 



Pseudomycoderma vesica (Harrison) Dodge, n. comb. 



Mycotorula vesica Harrison, Trans. R. Soc. Canada, Biol. Sci. 22: 219, 1928. 



Isolated from the urinary bladder, Rigshospitalet. 



From young malt agar colonies, cells ellipsoid, cylindric or irregular, bud- 

 ding at the ends and septa, ellipsoid cells 5 x 3.3)U,, cylindric cells 10 x 2fi. 

 From pellicle on 56-day-old malt extract cultures, cells more variable in shape, 

 oil globules more abundant, spherical cells 4/x in diameter, cylindric cells 15 

 X 1.8/A, ellipsoid cells 6 x 4/a, some hypliae present. 



On B. P. B. agar, colony spreading, shining, bluish with white margin. 

 On malt gelatin, colony slightly crateriform with radial markings, margin 

 slightly Avrinkled, white waxy. On potato, colony wrinkled to vermiculate. 



