120 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



t Bacterium delendae-muscae Roubaud and Descazeaux 



Source. — Diseased fly larvae. 



Experimental infection. — Cockroach, France (Roubaud and Des- 

 cazeaux, 1923) : Organism pathogenic to cockroach when injected. 



Bacterium haemophosphoreum Pfeiffer and Stammer 



Habitat. — Diseased larvae of Mamestra oleracea. 



Experimental infection. — Blatta orientalis and Blattella germanica, 

 Germany (Pfeiffer and Stammer, 193 1) : Organism pathogenic, when 

 injected, to eight B. orientalis and two B. germanica. 



Coccobacillus cajae Picard and Blanc 



Experimental host. — Blatta orientalis, France (Picard and Blanc, 

 1913) : The organism was pathogenic to B. orientalis when injected. 



Family BACILLACEAE 



* Bacillus anthracis Cohen emend. Koch 



Experimental vectors. — Blatta orientalis, Italy (Cao, 1898, 1906) ; 

 Germany (Kiister, 1903). 



t Bacillus butschlii Schaudinn 



Habitat. — Blatta orientalis, Germany (Schaudinn, 1902) : Isolated 

 from intestinal tract. Three percent of the cockroaches from Berlin 

 bakeries were infected. 



Bacillus cereus Frankland and Frankland 



Synonymy. — Bacillus albolactis. 



Habitat. — Soil, dust, milk, plants. 



Natural vectors. — Blabcnis craniifcr, U.S.A. (Wedberg et al., 

 1949) : From feces. 



Periplaneta americana, U.S.A. (Hatcher, 1939) : In feces. 



Experimental host. — Periplaneta americana, U.S.A. (Babers, 

 1938) : The cockroaches died within 96 hours after being injected 

 with io~^ ml. of a 24-hour broth culture. 



Bacillus circulans Jordan 



Habitat. — Soil, water, dust. 



Natural vectors. — Blattella germanica, U.S.A. (Janssen and Wed- 

 berg, 1952) : From intestine and feces. 



