122 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



Blatta orientalis, Italy (Cao, 1898, 1906; Spinelli and Reitano, 

 1932) ; France (Sartory and Clerc, 1908) ; Poland (Nicewicz et al., 

 1946). 



Cryptocercus punctulatus, v. S.A. (Hatcher, 1939). 



Periplaneta americana? {"Blatella americana") , England (Shrews- 

 bury and Barson, 1948). 



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



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



"Bacillus subtilis group" 



Natural infection. — Blatta orientalis, Italy (Ronzoni, 1949) : Iso- 

 lated from oothecae. 



t Bacillus tritus Batchelor 



Habitat. — Isolated from feces (man?). 



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

 Isolated from intestinal tract. 



* Clostridium f eseri Trevisan 

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



Clostridium lentoputrescens Hartsell and Rettger 



Habitat. — Soil, intestinal tract of man. 



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

 Isolated from intestinal tract. 



* Clostridium novyi (Migula) Bergey et al. or 

 ♦Clostridium sporogenes (Metchnikoff) Bergey et al. 



Natural and experimental vectors. — Blatta orientalis, Italy (Cao, 

 1898). 



* Clostridium perfringens ( Veillon and Zuber) Holland 



Natural vectors. — Cockroaches [presumably Blatta orientalis, Blat- 

 tella germanica, and/or Periplaneta americana], Egypt (El-Kholy 

 and Gohar, 1945). 



♦Clostridium tetani (Fliigge) Holland 

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



* Clostridium spp. 

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

 England (Shrewsbury and Barson, 1948). 



