PLATE 4 



FIG. 1. Cryptococcus aggregates sp. nov. Budding cells from young, beer- 

 wort culture. 



FIG. 2. Cryptococcus aggregatus sp. nov. Cells from old, agar cultures, 

 showing peculiar aggregation of buds about the enlarged, globular cells. 



FIG. 3. Parasaccharomyces Candida comb. nov. a, Portion of septate 

 mycelium from beneath the surface of the medium, b, Cells from the surface 

 of old, agar cultures. (Culture from Centralstelle fur Pilzkulturen, Amsterdam.) 



FIG. 4. Parasaccharomyces Ashfordi sp. nov. Cells from young, beerwort 

 culture. (Culture D from Dr. Ashford.) 



FIG. 5. Parasaccharomyces Ashfordi sp. nov. a, Moniliform clusters of cells 

 developed beneath the surface of an old agar culture, b, Cells from the sur- 

 face of the same culture. 



FIG. 6. Parasaccharomyces Candida comb. nov. Young cells from beerwort 

 culture. (Culture from Centralstelle fiir Pilzkulturen, Amsterdam.) 



FIG. 7. Zygosaccharomyces bisporus sp. nov. Cells from agar slant culture. 



FIG. 8. Zygosaccharomyces bisporus sp. nov. a, Typical form of cells from 

 old, agar slant, b, Conjugating cells which do not develop ascospores. c, Asco- 

 spore development without conjugation, d, Ascospore development as a result 

 of conjugation, b, c, and d from carrot slant. 



FIG. 9. Young cells of Culture 138.102. 



FIG. 10. Saccharomyces ellipsoideus Hansen. From young culture. 



FIG. 11. Saccharomyces ellipsoideus Hansen. From old culture. 



FIG. 12. Old cells of Culture 138.102. 



