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 28, 1934, 213; K&ss, Lid and MoUand, Norske Videnskaps-Akad., Oslo, I Mat.-Naturv. Klasse, No. 11, 1945, 9.) fu.ci'co.la. L. mas.n./tiCMS a seaweed; M. L. noun Fucus a genus of brown seaweeds; L.v. colo to inhabit; M.L. noun fucicola the Fucus dweller. Short rods, 0.6 to 1.0 by 1.0 to 1.5 microns, with ends rounded to almost coccoid; slightly curved. Actively motile with twirl- ing motion. Gram-negative. Alginic acid plate : Colonies finely granu- lar, entire; at first whitish, turning brown in three to five days, and later almost black, producing a deep brown, soluble pigment. Alginic acid liquid medium: Limited growth on surface in the form of a pellicle. Frequently produces no growth at all. Sea-water gelatin: Active liquefaction; no growth on stab; thin, fluorescent growth throughout liquefied zone. Agar liquefaction: Positive, although lim- ited; only softening of agar. Sea-water glucose broth: Faint turbidity; no pellicle; no sediment. Litmus milk containing salt: No apparent growth. Potato moistened with sea water: No growth. Starch plate: No growth. Aerobic. Optimum temperature, 20° C. Source : Isolated from sea water near the surface of the sand bottom. Habitat: Rare in sea water.

5. Alginomonas alginica (Waksman et al., 1934) Kiss et al., 1945. {Bacterium algini- cum Waksman, Carey and Allen, Jour. Bact., 28, 1934, 213; K&ss, Lid and Molland, Norske Videnskaps-Akad., Oslo, I Mat.- Naturv. Klasse, No. 11, 1945, 9.) al.gi'ni.ca. L. fem.n. alga seaweed; M.L. adj . alginicus pertaining to alginic acid from seaweed. Rods short to almost spherical, 0.6 to 1.0 micron in diameter. Encapsulated. Slug- gishly motile. Gram-negative. Alginic acid plate: White, finely granu- lated colonies with entire margin. Does not clear up the turbidity in plate. Odor pro- duced resembles that of old potatoes. Alginic acid liquid medium: Thin pellicle; weak alginase formation. Sea-water gelatin: Thin growth through- out gelatin stab; no liquefaction in 7 days at 18° C. Agar liquefaction: None. Sea-water glucose broth: Uniform but very limited turbidity; no pellicle; no sedi- ment. Litmus milk containing salt : No apparent growth. Potato moistened with sea water: Moist, spreading, cream-colored growth; heavy sediment in free liquid at bottom. Starch plate: Limited, pale blue growth; no diastase. Aerobic. Optimum temperature, 20° C. Source: Isolated from sea water and from the surface of algal growth. Habitat: Common in sea water.

My.co.pla'na. Gr. myces fungus; Gr. planus a wandering; M.L. fem.n. Mycoplana fungus wanderer.

Cells branching, especially in young cultures. Frequently banded when stained. Polar flagellate. Capable of using phenol or similar aromatic compounds as a sole source of energy. Grow well on standard culture media. From soil.

The type species is Mycoplana diniorpha Gray and Thornton.