* Streptococcus faecalis Andrewes and Horder
Natural vectors.—Blatta orientalis, Poland (Nicewicz et al., 1946).
Blattella germanica, U.S.A. (Steinhaus, 1941).
Periplaneta americana? ("Blatella americana"), England (Shrewsbury and Barson, 1948).
Cockroaches [presumably any or all of the above three species], Egypt (El-Kholy and Gohar, 1945).