FAMILY BACTERIACEAE 



605 



and maltose. Acid from sucrose. Lac- 

 tose not fermented. 



Source: From the integument of the 

 bed-bug, Cimex lectularius L. 



Habitat: Unknown. 



11. Bacterium minutaferula Steinhaus. 

 (Jour. Ba.ct.,43, 1941, 778.) From Latin, 

 small rod. 



Very small rods: 0.4 to 0.9 by 0.7 to 1.0 

 micron, occurring singly. Xon-motile. 

 Gram-positive. 



Gelatin stab: Xo liquefaction. 



Agar colonies: Colorless to faint gray, 

 circular, smooth, entire, glistening. 



Agar slant: Very thin, transparent, 

 glistening growth. 



Broth: Slight turbidity and sediment. 



Litmus milk: Xo change at first; 

 slightly acid after one week. 



Indole not produced. 



Hydrogen sulfide not produced. 



Xitrites not produced from nitrates. 



Starch not hydrolyzed. 



Acid from glucose after 4 days . Slight 

 acid from sucrose. Lactose and maltose 

 not fermented. 



Aerobic. 



Source: From triturated specimen of 

 the mud-dauber wasp, Sceliphron ce- 

 mentarium Dru. 



Habitat: Unknown. 



12. Bacterium fulviun (Zimmermannj 

 Chester. {Bacillus fulvus Zimmermann, 

 Bakt. unserer Trink- u. Xutzwasser, 

 Chemnitz, 1, 1890, 44; Chester, Ann. 

 Rept. Del. Col. Agr. Exp. Sta., .9, 1897, 

 107; Flavohacterium julvum Bergey et 

 al., Manual, 1st ed., 1923, 115.) From 

 Latin fulvus, dull yellow. 



Rods: 0.8 bj^ 0.9 to 1.3 microns, occur- 

 ring singly, in pairs and in chains. Xon- 

 motile. Gram-positive. 



Gelatin colonies: Circular, convex, 

 reddish -yellow. 



Gelatin stab: Convex, reddish-yellow 

 surface growth. Good growth in stab. 

 Slow liquefaction. 



Agar slant: Orange-red, glistening 

 streak. 



Broth: Turbid with yellow sediment. 



Litmus lactose broth: Acid, or acid 

 then alkaline (Dyar, Ann. X. Y. Acad. 

 Sci., 8, 1895, 368). 



Potato: Slowly spreading, j-ellowish, 

 glistening growth. 



Indole formed (Dj'ar, loc. cit.). 



Xitrites not produced from nitrates 

 (Bergey) . 



Aerobic, facultative. 



Optimum temperature 30°C. 



Source: From Chemnitz and Dobeln 

 tap water (Zimmermann). From dust 

 and water (Dyar) . 



Habitat: Water. 



13. Bacterium marinopiscosus ZoBell 

 and Up ham. (Bull. Scripps Inst. Ocean- 

 ography, La JoUa, 5, 1944, 258.) From 

 Latin marinus, pertaining to the sea, 

 and piscosus, fish. 



Rods: 1.2 to 1.6 by 2.0 to 4.7 microns, 

 with rounded ends, show granular stain- 

 ing, occurring singly, in pairs and long 

 chains. Xon-motile. Gram-positive, 

 but many cells tend to decolorize leaving 

 Gram-positive granules. 



All differential media except the fresh- 

 water broth, litmus milk, and potato 

 were prepared with sea water. 



Gelatin colonies: Gray, circular, con- 

 vex, 1 mm. Xo pigment. 



Gelatin stab: Liquefaction napiform, 

 becoming crateriform to stratiform with 

 age. Complete in 50 days. 



Agar colonies : 2 to 4 mm, circular, con- 

 vex, entire, smooth, irregular edge. 



Agar slant : Luxuriant, beaded, glisten- 

 ing, butyrous growth with no pigment. 



Sea-water broth: Xo turbidity, abun- 

 dant fiocculent sediment, slight surface 

 ring. 



Fresh-water broth: Good growth. 



Litmus milk: Decolorized, neutral, 

 top peptonized. 



Potato: Heavy, white, raised, mucoid, 

 dull growth. Potato darkened. 



Indole not formed. 



Xitrites not produced from nitrates. 



Acid but no gas from glucose and man- 



