no SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



* Streptococcus liquefaciens Sternberg emend. Orla-Jensen 

 Natural vectors. — Blatta orientalis, Poland (Nicewicz et al., 1946). 



♦ t Streptococcus microapoika Cooper, Keller, and Johnson 

 Natural vectors. — Blatta orientalis, Poland (Nicewicz et al., 1946). 



* t Streptococcus non-hemolyticus II Holman 



Natural vectors. — Periplaneta ainericana? {"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 (Flugge) Lehmann and Neumann 



Experimental vectors. — Blatta orientalis, Italy (Cao, 1898). 

 Cockroaches, U.S.A. (Longfellow, 1913). 



Family ACHROMOBACTERIACEAE 



t 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 Wed- 

 berg, 1952). 



