137 



Due to the confusion in the literature, it has "been 

 rather difficult to determine whether Diplococcus lyman - 

 triae , Bacillus lymantriae , and Coccohacillus lymantriae 

 are the same organism. It appears likely, however, that 

 Diplococcus lymantriae is distinct since Paillot (1917) 

 states: "The microhes parasitic in the larvae of Porthetria 

 ( Lymantria ) dispar here described are a cocco"bacillus pro- 

 visionally identified as Bacillus lymantria , Diplococcus 

 lymantria , sp. n. , which is only slightly pathogenic to 

 the caterpillars, and Bacillus liparis sp. n. " One might 

 assume that perhaps Coccobacillus lymantriae and Bacillus 

 lymantriae are the same, Picard and Blanc using the 

 generic name Coccohacillus , and Paillot, the generic name 

 Bacillus . Paillot (1933) also refers to a " Bacillus 

 ( Bacterium ) lymantriae. " 



*Paillot, A. 1917 Microhes nouveaux parasites des 

 chenilles de Lymantria dispar . Compt. rend, hehdom. 

 acad. sci., 164 , 525^527. 



Paillot, A. 1933 L' infection chez les insectes. 535 PP« 

 Imprimerie de Trevoux, Paris. (See p. 131. ) 



D 1 PLOCOCCUS MELOLONTHAE Paillot 



Insects concerned: The cockchafer, Melolontha melolontha ; 

 Vanessa urticae ; the gypsy moth, Porthetria ( Lymantria ) 

 dispar . 



Paillot (1917) found that a cocco"bacillus and Diplo - 

 coccus melolonthae killed cockchafers in 2k hours, while 

 the diplococcus alone was only slightly pathogenic. 

 Paillot (1933) mentions Diplococcus melolonthae as an 

 example of "bacterial variation. 



* Paillot, A. 1917 Microhes nouveaux, Parasites du Hanne- 

 ton. Action pathogene sur Chenilles de Vanessa urticae , 

 Lymantria dispar , et sur Vers a Goie. Compt. rend. soc. 

 hiol. , 80, 56-58. 



Paillot, A. 1933 L' infection chez les insectes. 535 pp. 

 Imprimerie de Trevoux, Paris. (See p. 139 . ) 



D I PLOCOCCU S PEMPHIGOCONTAG IOSUS 



Insect concerned: Lice. 



* 



Wardle (1939) refers to the transmission of Diplococcus 

 pemphigocontagiosus hy lice. (See also MacGregor, 1917. ) 



