39 



Riley, W. A. and Johannsen, 0. A. 1932 Medical Entomology. 



1st ed. , U76 pp. McGraw-Hill Book Co., New York. (See 



p. 121.) 

 Riley, W. A. and Johannsen, 0. A. 1938 Medical Entomology, 



^83 pp. , McGraw-Hill Book Co. , Inc. , New York and London. 



(See p. 336.) 

 Spielman and Haushalter 1887 Dissemination du "bacilli de 



la tuber culose par la mouche. compt. rend. acad. sci. , 



103 , 352-353. 

 Tejera, E. I926 Les "blattes envisagees comme agentes de 

 dissemination des germes pathogenes. Compt. rend. soc. 

 biol., 95, I382-I38J1. 



Order : EUBACTER TALES 



Family: BAC I LLACEAE 



Genus : Ba c i llus 



Bac I LLU s A Ledingham 



Insect concerned: The house fly, Musca domestica . 



A non- lactose fermenting "bacillus isolated from the 

 feces of children has "been found "by Tebbutt (1913) to "be 

 normal to the house fly (Musca domestica ) . It was present 

 on the ova and in the larvae and adults. When the "bacillus 

 was fed to the larvae, it survived through the metamor- 

 phosis to the adult fly. 



Tebbutt, H. 1913 Jour. Hyg. 12, 516-526. 

 Pierce, W. D. 1921 Sanitary entomology, 518 pp. Gorham 

 Press, Boston. (See p. 109. ) 



BAC ILLUS A White 



Insect concerned: The adult honey bee, Aphis mellifera . 



White (1906) isolated Bacillus A from the "body of a 

 healthy "bee and from the combs. He indicates that the 

 organism may he the same as B. mesentericus , and gives a 

 complete description of the organism. 



*White, G. F. 1906 The "bacteria of the apiary with spe- 

 cial reference to "bee diseases. U. S. Dept. Agr. , Bur. 

 Entomol. , Tech. Bull. No. ±k, 50 pp. 



