112 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



Cockroaches [presumably Blatta orientalis, Blattella germanica 

 and/or Periplaneta americana], Egypt (El-Kholy and Gohar, 1945) : 

 Isolated from outer surface of body, intestinal tract, and suspensions 

 of macerated whole insects. 



Aerobacter cloacae (Jordan) Bergey et al. 



Synonymy. — Bacillus cloacae. 



Habitat. — Sewage, soil, water, human and other animal feces. 



Natural vectors. — Blattella germanica, on shipboard (Morrell, 

 191 1 ) : From feces. U.S.A. ( Janssen and Wedberg, 1952; Steinhaus, 

 1941 ) : From intestinal tract, feces, and ootheca. 



Periplaneta americana, U.S.A. (Bitter and Williams, 1949) : From 

 intestinal tract. 



Aerobacter sp. 



Natural vectors. — periplaneta americana, U.S.A. (Bitter and Wil- 

 liams, 1949) : Isolated from intestines. 



tEberthella oedematiens Assis 



Habitat. — Intestinal canal. 



Natural vectors. — Periplaneta americana, U.S.A. (Bitter and Wil- 

 liams, 1949) : Intestinal tract. 



* Escherichia coli (Migula) Castellani and Chalmers 



Natural vectors. — Blatta orientalis, Italy (Cao 1898, 1906; Spinelli 

 and Reitano, 1932) ; France (Sartory and Clerc, 1908) ; Europe (Jett- 

 mar, 1935) ; Poland (Nicewicz et al., 1946). 



Blattella germanica, U.S.A. (Steinhaus, 1941). 



Periplaneta americana, U.S.A. (Bitter and Williams, 1949, 1949a). 



Cockroaches [presumably one or all of the above three species], 

 Egypt (El-Kholy and Gohar, 1945). 



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



Experimental vectors. — Blattella germanica, Germany ( Vollbrechts- 

 hausen, 1953) : When injected anally or orally the bacteria invaded 

 the intestinal cells and in heavy infections killed the cockroaches. 



Escherichia coli var. acidilactici (Topley and Wilson) Yale 



Synonymy. — Bacillus acidi lactici. 

 Source. — Diseased nun moth larvae. 



Experimental vectors. — Blatta orientalis, Europe (Filatoff, 1904) : 

 Organism pathogenic to cockroach when injected but not when fed. 



