FAMILY BACTERIACEAE 



625 



Nitrites not produced from nitrates. 

 No action on carbohydrates. 

 Slight hydrolysis of starch. 

 Aerobic, facultative. 

 Optimum temperature 30°C. 

 Source: Sea water of Norwegian Coast. 

 Habitat: Sea water. 



30. Bacterium droebachense Lunde- 

 stad. (Lundestad, Cent. f. Bakt., II 

 Abt., 1928, 329; Flavobacterium droe- 

 bachense Bergey et al., Manual, 3rd ed., 

 1930, 153; Pseudomonas droebachense 

 Stanier, Jour. Bact., 4^, 1941, 544.) 

 Latinized, from Drobak, where this or- 

 ganism was isolated. 



Rods: 0.5 to 0.6 by 2.0 to 2.6 microns, 

 with rounded ends, occurring singly. 

 Non-motile. Gram-negative. 



Fish-gelatin colonies: Small, circular, 

 compact, opaque, glistening, orange- 

 yellow. 



Fish-gelatin stab: Liquefaction in- 

 fundibuliform becoming stratiform. 



Sea-weed agar colonies: Small, circu- 

 lar, flat, opaque, glistening, orange- 

 yellow. Agar is disintegrated. 



Fish-agar slant: Flat, opaque, glisten- 

 ing, slimy, orange-yellow, entire growth. 



Broth: Slight flocculent turbidity, 

 yellow. 



Indole not formed. 



Nitrites not produced from nitrates. 



Starch hydrolyzed. 



Slow growth on surface of glucose agar 

 stab. No gas. 



Aerobic, facultative. 



Optimum temperature about 37°C. 

 Minimum temperature 5° to 10°C. 

 Maximum 40 °C. 



Stanier (loc. cit.) identified cultures 

 isolated from sea water on the Pacific 

 Coast as belonging to this species. 

 Some liquefied gelatin while others did 

 not. Nitrates were reduced. A yellow 

 membraneous pellicle was formed on 

 broth, and the temperature range is 

 given as 5° to 35°C. Optimum 25°C. 

 He renamed the organism Pseudomonas 



droebachensis, but reported it non- 

 motile. 



Source: From sea water at Drobak on 

 the Norwegian Coast. 



Habitat: Sea water. 



31. Bacterium delesseriae Lundestad. 

 (Lundestad, Cent. f. Bakt., II Abt., 

 75, 1928, 332; Flavobacterium delesseriae 

 Bergey et al.. Manual, 3rd ed., 1930, 

 153.) 



Rods: 0.5 to 0.6 by 1.6 to 2.6 microns, 

 with rounded ends, occurring singly. 

 Non-motile. Gram-negative. 



Fish-gelatin colonies: Circular, trans- 

 parent, glistening, concentrically ringed, 

 yellow. 



Fish -gelatin stab: Crateriform lique- 

 faction, with yellow sediment. 



Sea-weed agar colonies: Circular, flat, 

 concentrically ringed, light yellow. 

 Agar is disintegrated. 



Fish-agar slant: No growth. 



Broth : Turbid with flocculent pellicle 

 and sediment, light yellow. 



Indole not reported. 



Nitrites not reported. 



No action on carbohydrates. 



Slight hj'drolysis of starch. 



Aerobic, facultative. 



Optimum temperature 23°C. 



Source : Sea water of Norwegian Coast. 



Habitat: Sea water. 



32. Bacterium boreale Lundestad. 

 (Lundestad, Cent. f. Bakt., II Abt., 75, 

 1928, 333; Flavobacterium boreale Bergey 

 et al., Manual, 3rd ed., 1930, 154.) 

 From Latin borealis, northern. 



Rods: 0.5 to 0.6 by 1.6 to 2.6 microns, 

 with rounded ends, occurring singly. 

 Non-motile. Gram-negative. 



Fish -gelatin colonies: Circular, 

 opaque, glistening, concentrically 

 ringed, yellow. 



Fish-gelatin stab : Yellow, with crateri- 

 form liquefaction. 



Sea-water agar colonies: Circular, flat, 

 opaque, glistening, diffuse margin, light 

 yellow. Agar is disintegrated. 



