=Lactobacillus fermenti= Beijerinck _Habitat._--Fermenting plant or animal products. _Natural vectors._--_Blatta orientalis_, Poland (Nicewicz et al., 1946): From intestinal canal. [cross] =Pneumococcus Type I, No. 1231= _Experimental vectors._--_Blattella germanica_, Germany (Vollbrechtshausen, 1953). * =Streptococcus faecalis= Andrewes and Horder _Natural vectors._--_Blatta orientalis_, Poland (Nicewicz et al., 1946). _Blattella germanica_, U.S.A. (Steinhaus, 1941). _Periplaneta americana?_ ("_Blatella americana_"), England (Shrewsbury and Barson, 1948). Cockroaches [presumably any or all of the above three species], Egypt (El-Kholy and Gohar, 1945). * =Streptococcus liquefaciens= Sternberg emend. Orla-Jensen _Natural vectors._--_Blatta orientalis_, Poland (Nicewicz et al., 1946). *[cross] =Streptococcus microapoika= Cooper, Keller, and Johnson _Natural vectors._--_Blatta orientalis_, Poland (Nicewicz et al., 1946). *[cross] =Streptococcus non-hemolyticus II= Holman _Natural vectors._--_Periplaneta americana?_ ("_Blatella americana_"), England (Shrewsbury and Barson, 1948). * =Streptococcus pyogenes= Rosenbach _Natural vectors._--_Blatta orientalis_, Italy (Cao, 1906). _Experimental vectors._--Cockroaches, U.S.A. (Longfellow, 1913). * =Streptococcus= sp. (pyogenic group) _Experimental vectors._--_Blatta orientalis_, Germany (Jettmar, 1935). * =Streptococcus= sp. (_viridans_ group) _Experimental vectors._--_Blatta orientalis_, Germany (Jettmar, 1935). * =Streptococcus= spp. _Natural vectors._--_Blatta orientalis_, Germany (Jettmar, 1935). _Blattella germanica_, Germany (Jettmar, 1935); U.S.A. (Janssen and Wedberg, 1952). Cockroaches, U.S.A. (Longfellow, 1913). _Experimental vectors._--_Blatta orientalis_, Italy (Cao, 1898). Family CORYNEBACTERIACEAE * =Corynebacterium diphtheriae= (Flügge) Lehmann and Neumann _Experimental vectors._--_Blatta orientalis_, Italy (Cao, 1898). Cockroaches, U.S.A. (Longfellow, 1913). Family ACHROMOBACTERIACEAE [cross] =Achromobacter hyalinum= (Jordan) Bergey et al. _Natural vectors._--_Periplaneta americana_, U.S.A. (Hatcher, 1939): Isolated from feces. =Achromobacter= sp. _Natural vectors._--_Blattella germanica_, U.S.A. (Janssen and Wedberg, 1952). =Alcaligenes faecalis= Castellani and Chalmers _Synonymy._--_Bacillus faecalis alkaligenes_; _Bacillus alcaligenes faecalis_; _B. alcaligenes faecalis_. _Habitat._--Intestinal canal of man. Has been isolated from feces, abscesses related to intestinal canal, and occasionally in the bloodstream. However, it is generally considered nonpathogenic. _Natural vectors._--_Blaberus craniifer_, U.S.A. (Wedberg et al., 1949): Isolated from feces. _Blatta orientalis_, Poland (Nicewicz et al., 1946): Isolated from intestinal tract. _Blattella germanica_, U.S.A. (Janssen and Wedberg, 1952): From intestinal tract and feces. _Periplaneta americana_, U.S.A. (Bitter and Williams, 1949): Isolated from intestinal tract.