_Blatta orientalis_, Italy (Cao, 1906). _Blattella germanica_, U.S.A. (Herms, 1939). Cockroaches, U.S.A. (Longfellow, 1913). =Micrococcus ureae= Cohn _Habitat._--Stale urine and soil containing urine. _Natural vectors._--_Blattella germanica_, U.S.A. (Janssen and Wedberg, 1952): From intestinal tract and feces. * =Micrococcus= spp. These organisms were obtained from pus or were designated as staphylococci [i.e., pathogenic micrococci (Blair _in_ Dubos, 1948)]. _Natural vectors._--_Blatta orientalis_, Italy (Spinelli and Reitano, 1932); Germany (Jettmar, 1935). _Blattella germanica_, Germany (Jettmar, 1935). _Experimental vectors._--_Blattella germanica_, on shipboard (Morrell, 1911); Germany (Vollbrechtshausen, 1953). =Micrococcus= sp. _Natural vectors._--_Periplaneta americana?_ ("_Blatella americana_"), England (Shrewsbury and Barson, 1948): From intestinal tract. [cross] =Sarcina alba= Zimmermann _Habitat._--Water. _Natural and experimental vectors._--_Blatta orientalis_, Italy (Cao 1898, 1906): From intestinal contents. =Sarcina aurantiaca= Flügge _Habitat._--Air and water. _Experimental vectors._--_Blatta orientalis_, Italy (Cao, 1906): Intestinal contents. =Sarcina lutea= Schroeter _Habitat._--Air, soil, water, skin surfaces. _Experimental vectors._--_Blatta orientalis_, Italy (Cao, 1906): From intestinal contents. [cross] =Sarcina symbiotica= Pribram _Habitat._--Oöthecae of _Blatta orientalis_ and/or _Blattella germanica_, Germany (Gropengiesser, 1925): It was described as "eine gelbe _Sarcina_"; Pribram (1933) named the organism. =Sarcina ventriculi= Goodsir _Habitat._--Garden soil, dust, mud; isolated from a diseased stomach. _Natural vectors._--_Blatta orientalis_, Poland (Nicewicz et al., 1946): From intestinal tract. =Sarcina= sp. _Natural and experimental vectors._--_Periplaneta americana_, U.S.A. (Gier, 1947): Organism not pathogenic to the cockroach when injected. [cross] =Sarcina= sp. _Synonymy._--_Sarcina_ "blanche" of Sartory and Clerc. _Natural vectors._--_Blatta orientalis_, France (Sartory and Clerc, 1908): Isolated from intestinal tract. *[cross] =Sarcina= sp. _Synonymy._--_Sarcina alba_ "patogena" of Cao. _Natural vectors._--_Blatta orientalis_, Italy (Cao, 1898, 1906). *[cross] =Sarcina= sp. _Synonymy._--_Sarcina_ "bianca" and "gialla" of Cao. _Experimental vectors._--_Blatta orientalis_, Italy (Cao, 1898). Family NEISSERIACEAE * =Neisseria meningitidis= (Albrecht and Ghon) Holland _Experimental vectors._--Cockroaches, U.S.A. (Longfellow, 1913). * =Veillonella parvula= (Veillon and Zuber) Prévot _Natural vectors._--_Periplaneta americana_, U.S.A. (Hatcher, 1939). Family LACTOBACTERIACEAE * =Diplococcus pneumoniae= Weichselbaum _Experimental vectors._--_Blatta orientalis_, Italy (Cao, 1898). Cockroaches, U.S.A. (Longfellow, 1913). [cross] =Enterococcus= sp. _Natural vectors._--_Blatta orientalis_, Italy (Spinelli and Reitano, 1932): From intestinal tract.