Aerobacter sp.
Natural vectors.—Periplaneta americana, U.S.A. (Bitter and Williams, 1949): Isolated from intestines.
† Eberthella oedematiens Assis
Habitat.—Intestinal canal.
Natural vectors.—Periplaneta americana, U.S.A. (Bitter and Williams, 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 (Jettmar, 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).