The present investigation was undertaken with a two-fold purpose: 1) to obtain the synopsis of yeasts for the taxonomic studies, and 2) to determine the specific features of “Shiokara” yeasts. In this report the description of morphological and cultural characteristics of true yeasts (23 strains isolated from 15 samples) was made. The summarized characteristics are as follows: almost all of the species of Zygosaccharomyces have around cell while those of Debaryomyces have a round, egg-Shaped or ellipsoid cell containing one or two oil drops (Table 1). Most fi1m- or ring-forming yeasts belong to Debaryomyces(Table2). The fermentable strains of “Shiokara" ?yeasts belong almost all to Zygosac-charomyces and their fermentability is continuous, though not vigorous. The streak culture is shown in Table 3 and photograph. In gelatin stab cultures the liquefaction could not be observed except in some rare cases (Table4). The giant colony of Debaryomyces sp. C_2 is different from any of Debaryomyces already described, the former showing many characteristic concentric rings (Table 5 and photograph).
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