B. Nitrites not produced from nitra II. Gelatin liquefied. A. Nitrites produced from nitrates. 1. Acid from sucrose. 2. No acid from sucrose. 2. Beneckea ureasophora. 3. Beneckea chitinovora. 4. Beneckea hyper optica. B. Nitrites not produced from nitrates. 1. Acid from sucrose. 2. No acid from sucrose. 5. Beneckea indolthetica. 6. Beneckea lipophaga. 1. Beneckea labra (Campbell and Wil- liams, 1951) Campbell, comb. nov. {Achro- niobacter labrum Campbell and Williams, Jour. Gen. Microbiol., 5, 1951, 894.) la'bra. Gr. adj. labrus greedy. Rods, 0.2 to 0.4 by 0.8 to 1.1 microns, occurring singly, in pairs and occasionally in clumps. Motile by means of peritrichous flagella. Gram-negative. Gelatin stab: No liquefaction. Agar colonies: Circular, smooth, entire, flat, glistening, opaque, non-pigmented to pale cream. Agar slants: Abundant, filiform, smooth, glistening, opaque, non-pigmented growth. Broth: Moderately turbid: surface growth adherent to the walls of the tubes. Litmus milk: Acid in 6 days. Indole not produced. Hydrogen sulfide not produced. Acid but no gas from glucose, fructose, maltose, de.xtrin, mannose, trehalose and cellobiose. No acid from lactose, sucrose, arabinose, rhamnose, xylose, raffinose, inulin, mannitol, salicin, dulcitol, inositol, melezitose or adonitol. Glucose, fructose, sucrose, maltose, lac- tose, dextrin, mannose, arabinose, rham- nose, xylose, raffinose, inulin, mannitol, salicin, galactose, trehalose, inositol, cello- biose, melezitose, adonitol, chitin, glycogen, starch, butyrate, valerate, asparaginate, succinate, malate, fumarate (0.5 per cent), levulinate, /3-alanine, glucosamine, ethanol and tertiary butanol are utilized as carbon sources. Dulcitol, cellulose, malonate, sali- cylate, oxalate, mandelate, benzoate (0.5 per cent), propionate, n-amyl alcohol, meth- anol, n-propanol, iso-amyl alcohol and lumichrome are not utilized as carbon sources. Starch is hydrolyzed. Chitin is hydrolyzed. Non -lipolytic. Nitrites produced from nitrates. Ammonia produced from peptone. Urease-negative. Casein not hydrolyzed. Trimethylamine not produced from tri- methylamine oxide, choline or betaine. Aerobic, facultative. Optimum temperature, between 20° and 30° C. Grows at 4° C. Source: Isolated from marine mud. Habitat: Found in sea water. 2. Beneckea ureasophora (Campbell and Williams, 1951) Campbell, comb. nov. {Achromobacter ureasophorum Campbell and Williams, Jour. Gen. Microbiol., 5, 1951, 894.) u.re.a.so'pho.ra. Gr. noun urum urine; M.L. noun urea urea; M.L. noun ureasum urease; Gr. adj. phorus bearing; M.L. adj. iireasophorus urease-bearing. Small rods, 0.2 by 0.8 micron, occurring singly. Motile by means of peritrichous flagella. Gram-negative. Gelatin stab: No liquefaction. Agar colonies: Circular, raised, glisten- ing, entire, translucent, non-pigmented. Agar slant: Abundant, filiform, glisten- ing, translucent, non-pigmented growth. Broth: Slightly turbid with a stringy sediment. Litmus milk: Acid in 6 da3's. Indole not produced. Hydrogen sulfide not produced. Acid but no gas from glucose, fructose,
