STUDIES ON THE ANTI-TRICHOMONAL ACTINOMYCETES AND THEIR CLASSIFICATION

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1. The mycological characters of 172 anti-trichomonal Actinomycetes, which had been selected from 1244 typical Actinomycetes, were studied, and their belonging 9 groups, 12 specics, and 3 new species is described. Among them the S. lavendulae, S. reticuli, S. diastatochromogenes, and S. griseus groups had large numbers of strains as shown in Table 1. However, some of the cultures of the S. diastatochromogenes group and the S. ruber group quickly lost their activity after repeated transfers on synthetic medium (Table 4).
2. Morphologically these Actinomycetes may be divided into four sections, and, as shown in the text, further classified by using the color of the aerial mycelium, soluble pigment production, and the color of vegetative growth as keys.
3. Strains H-5080, H-4871, and H-4650 were considered to be new species and were named S. purpeofuscus n. sp., S. naganishii n. sp., and S. griseoruber n. sp., respectively.
4. The antibiotic spectrum, the dilution potency, and the haemolytic power of these Actinomycetes were examined.
5. Carbon utilization of typical anti-trichomonal Actinomycetes was studied (Table 3).