"The Mystery of Lyle and Louise"

Isolated from human nasopharynx. Presumably not related to N. sicca; some relation to N. gonorrhoeae. Often agglutinates in saline. 

Grows on dead tissues. Novobiocin resistant (S. epidermidis and S. aureus novobiocin sensitive). 

Noted for capsular swelling. Causes pneumonia and urinary tract infections.

Isolated from sewage, human intestines, and urinary tract infections. Spreading colonies are seen on agar growth medium. 

This organism can be isolated from many human urinary tract infections, as well as polluted water and sewage. It is commonly identified by its distinctive grape-like smell (trimethylamine) or because it can turn the agar light green due to production of a blue pigment (pyocyanin).

Lancefield group A, beta hemolysis. Sensitive to bacitracin. Causes strep throat, rheumatic fever, and scarlet fever.

Isolated from human urinary tract and wound infections, this organism is identifiable by its characteristic putrefactive odor. 

Beta hemolysis on blood. Causes wound infections and septicemia. 

This organism is commonly isolated from soil, and depending upon the temperature of its environment, can produce a distinctive red pigment.

Isolated from human saliva, sputum, and intestine. No Lancefield group shown, alpha hemolysis.