133 



"Zernhoff (1931) has reported that this hacillus 

 is very virulent to the larvae of the wax moth, 

 Galleria me Hone 11a (L. ), "by inoculation "but not "by 

 ingestion, whereas "both methods result in infection 

 in the larvae of the European corn "borer, Pyrausta 

 nuMlalis (Hbn. ). 



"Mas era has recently (I93^ a and h, 193°a, h, and 

 c) published an extensive series of papers dealing 

 with experimental studies of the pathogenicity of 

 Bacillus prodigiosus . He found it to "be fatal to 

 Pyrausta nubilalis hy inoculation and "by ingestion; 

 while to Bombyx mori fatal when inoculated "but not 

 necessarily fatal when ingested, depending particu- 

 larly on the age of the larvae. In the case of 

 Galleria mellonella he found it to "be fatal only "by 

 inoculation, never "by ingestion, and finally he 

 found it to "be nonpathogenic to the larvae of Tene - 

 "brio molitor L. [According to Mas era, the immunity 

 of the insects may he c due to their food which nor- 

 mally contains microorganisms.] 



"Lepseme (1937a, 1937b) has reported the occur- 

 rence of an epizootic in lahoratory-hred Schistocer - 

 ca gregaria Forsk. caused "by Bacillus prodigiosus 

 and has shown that inoculation produces death in 

 one or two days with the usual red coloration occur- 

 ring ( in this case mainly in the ahdomen) while 

 ingestion produces death only occasionally." [This 

 worker (1938) also found it to he a secondary invader 

 to the infestation of -the fungus Aspergillus flavus 

 in Schistocerca gregaria /] 



De Bach and McOmie (1939) found their laboratory stock 

 of the termite, Zootermopsis angustioollis , to "be suffer- 

 ing from two "bacterial diseases* One of these diseases 

 was due to Bacterium sp. (which see); the other to 

 Serratia marges cens . The latter organism causes the head 

 and appendages of the dead termites to turn red, 



Longfellow (1913) ™as able to cultivate Bacillus 

 prodigiosus from the feces of the common houseroach. Dun- 

 can (1926) found "B. prodigiosus " several times in the 

 gut contents of the Stomoxys calci trans . Pospelov (193^) 

 isolated Bacterium prodigiosum from Pseudo coccus citri 

 and found it to "be virulent for several species of^ the 

 Pseudococcus . 



In 1927, Dr. Breed (19^0) received 32 cultures of 

 Serratia mar ces cens from Professor E. Hiratsuka, Japan, 

 which had he en isolated from silkworm larvae and cocoons. 

 Metalnikov and Chorine (1928) found that an organism which 



