PSEUDOSACCHAROMYCES OF WILL 327 



PSEUDOSACCHAROMYCES ANTILLARUM. Klocker 



On beer wort at 25 C., the cells are small and lemon-shaped or 

 elliptical 5 to 12 ju- long. The limits of temperature for growth are 

 37-38C. and 3^ C. It ferments dextrose, levulose, d-mannose, 

 saccharose and maltose feebly. Gelatin is liquefied. This yeast was 

 isolated from soil from St. Thomas. 



PSEUDOSACCHAROMYCES OCCIDENTALS. Klocker 



On beer wort at 25 C., this species possesses lemon-shaped cells 

 (6 to 10 ju long). The limits of temperature for growth are 39-40 C. 

 and 3 to 6 C. It ferments dextrose, levulose, d-mannose and sac- 

 charose and acts feebly on maltose. It liquefies gelatin. It was iso- 

 lated from soil from St. Croix. 



PSEUDOSACCHAROMYCES SAUTRANZENSIS. Klocker 



The cells of this yeast are elliptical or lemon shaped on beer wort 

 at 25 C. They are from 6 to 10 ju- long. The temperature limits 

 for growth are 37-38 C. and 3 to 6 C. It ferments dextrose, levulose, 

 d-mannose and maltose very feebly. Gelatin is liquefied. It was 

 isolated from soil from St. Croix. 



PSEUDOSACCHAROMYCES INDICUS. Klocker 



On wort at 25 C. , the cells are lemon shaped or elliptical. They 

 may be sausage shaped (3-7 jj, long). The temperature limits for 

 growth are 37-38 C. and 3-4 C. It ferments dextrose, levulose, 

 d-mannose, saccharose and maltose very feebly. It liquefies gelatin. 



PSEUDOSACCHAROMYCES OF WILL 



Will has isolated four species of yeasts from different sources none 

 of which form ascospores. The shape of these yeasts is quite vari- 

 able. The lemon-shaped cell with points may disappear and the cells 

 assume the spherical shape. In other cases the cells may become 

 spindle-shaped. Some of the cells are filiform while others are sausage 

 shaped. The size of the cells is also quite variable. They vary be- 

 tween 5 and 6/z in length. They -may be distinguished from each 

 other by their scums. Two of them (Nos. 4 and 7) have a well-de- 

 veloped scum while the other two (Nos. 1 and 3) form only a ring. 



The giant colonies are characteristic in appearance; those for 

 yeasts 1 and 3 spread out on the surface while those for yeasts 4 and 7 

 are cup-shaped. Yeasts 4 and 7 liquefy gelatin more quickly than the 



