BIOTIC ASSOCIATIONS OF COCKROACHES — ROTH & WILLIS IIQ 



* Shigella paradysenteriae (Collins) Weldin 



Natural vectors. — Blatta lateralis, Tadzhikistan (Zmeev, 1940). 

 Experimental vectors. — Periplaneta americana, Gold Coast Colony 

 (Macfie, 1922). 

 Polyphaga saussurei, U.S.S.R. (Zmeev in Pavlovskii, 1948). 

 Cockroaches, Venezuela (Tejera, 1926). 



Family PARVOBACTERIACEAE 



Bacteroides uncatus Eggerth and Gagnon 



Habitat. — Probably intestinal canal of mammals ; from human feces. 

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

 From intestinal canal. 



♦Brucella abortus (Schmidt and Weis) Meyer and Shaw 



Experimental vectors. — Periplaneta americana, U.S.A. (Ruhland 

 and Huddleson, 1941). 



Fusifonnis lophomonadis Grasse 



Habitat. — Surface of a flagellate (Lophomonas striata) which lives 

 in the intestine of cockroaches (Breed et al., 1948; Grasse 1926, 

 1926a). 



* Malleomyces mallei (Zopf ) Pribram 



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



* Pasteurella multocida (Lehmann and Neumann) Rosenbusch and Merchant 



Experimental vectors — Blatta orientalis, Germany (Kiister, 1902, 

 1903) ; Italy (Cao, 1906). 



* Pasteurella pestis (Lehmann and Neumann) Holland 



Natural vectors. — Blatta orientalis, Hongkong (Hunter, 1906). 



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

 many (Kiister, 1903). 



Blattella germanica, Germany (Jettmar, 1927). 



Leucophaea maderae and Periplaneta americana, Philippine Islands 

 (Barber, 1912). 



Family BACTERIACEAE 



t Bacterium alkaligenes Nyberg 



Natural vectors. — Periplaneta americana? {"Blatella americana"), 

 England (Shrewsbury and Barson, 1948) : From intestinal tract. 



