of yeast extract and ferric phosphate. Good species that apparently belong here, the growth on broth of this composition was majority of which attack cellulose: Verona also obtained. Apparently the yeast extract (Rendiconti R. Accad. Naz. d. Lincei, 19, supplied necessary growth substances. Ser. 6a, 1934, 731), Imsenecki and Solntzeva Source: Isolated by streaking a piece of (Bull. Acad. Sci., U.S.S.R., Ser. Biol., No. Dictyota dichotoma on agar containing 0.2 6, 1936, 000), Verona and Baldacci (Myco- per cent potassium nitrate. pathologia, 2, 1939, 135; also see Boll. R. Habitat: From seaweed. Beaufort, North 1st. Patol. d. Libro, 1, 1939, 8 pp.), Soriano Carolina. (Rev. Argentina de Agronomia, 12, 1945, 125), Pringsheim (Jour. Gen. Microbiol., NOTE: Species incertae sedis. In recent 5, 1951, 145) and Kadota (Bull. Japanese years at least fourteen additional species Soc. of Sci. Fisheries, 19, 1953, 476). Some of have been placed in the genus Cytophaga the organisms described were found in soil or in other genera that appear to duplicate or humus, while others were found to cause this genus. For example Stapp and Bortels deterioration of paper or stored fish nets; (Zent. f. Bakt., II Abt., 90, 1934, 28) have still others were found in the intestines or described five new species of Cytophaga from feces of termites. Comparative studies must the humus of forest soils. Similarly, the fol- be made before the true relationships of lowing authors have described unicellular these .species can be determined. FAMILY II. ARCHANGIACEAE JAHN, 1924. (Beitrage zur bot. Protistologie. I, Die Polyangiden. Geb. Borntraeger, Leipzig, 1924.) Ar.chan.gi.a'ce.ae. M.L. neut.n. Archangium type genus of the family; -aceae ending to denote a family; M.L. fem.pl.n. Archangiaceae the Archangium family. The resting cells are shortened rods, never enclosed in larger cysts. The fruiting bodies are irregularly swollen or twisted, or are finger-like structures. Key to the genera of family Archangiaceae. I. Fruiting body depressed, usually irregularly delimited, the interior usually consisting of swollen or intestine-like twisted or inter-twined masses, whose windings may be constricted or may jut out (project) as free ends. Genus I. Archangiurti, p. 863. II. Fruiting body consists of single (separate) columnar or finger-like structures arising from the substrate. Genus' II. Stelangium, p. 866. Genus I. Archangium Jahn, 1924. (Beitrage zur bot. Protistologie. I, Die Polyangiden. Geb. Borntraeger, Leipzig, 1924, 67.) Ar.chan'gi.um. Gr. noun arche from the first, beginning; Gr. noun angium a vessel, re- ceptacle; M.L. neut.n. Archangium primitive vessel. The mass of shortened rods embedded in slime forms a pad-shaped or more rounded, superficially swollen or tuberous fruiting body, even with horny divisions. The fruiting body has no membrane. In the interior can be seen a mass resembling coiled intestines. The windings of this coil may be uniform, or irregularly^ jointed, free or stuck together; the ends may be extended and horny. Instead of a membrane there may be loosely enveloping slime. The type species is Archangium gephyra Jahn. Key to the species of genus Archangium. I. No slimy capsules. A. Fruiting body usually wound, irregularly constricted, sometimes swollen and vesicu- lar, appressed.
