FOREWORD 



This volume represents the first attempt toward 

 bringing together in readily available form the essen- 

 tial data on the microbiology of insects and closely 

 related arthropods. Research workers and others 

 interested in this field have long been hampered not 

 only by the widely scattered literature, much of it 

 not easily accessible, but also by the varied termin- 

 ology employed. 



The phases of microbiology involved include the 

 bacteria, rickettsiae, viruses, fungi and protozoa. 

 The present publication covers only the extracellular 

 bacteria, which is the largest group concerned.- It is 

 hoped that the author will be able to cover the intra- 

 cellular bacteria and the other groups of microorganisms 

 in future publications. 



This catalogue will be of value as a reference work 

 for entomologists, bacteriologists, and parasitologists 

 generally and of particular value to research workers 

 and others interested in more specialized fields such 

 as those relating to the bacterial diseases of insects 

 and the bacterial diseases transmissible directly or 

 indirectly by insects and ticks to man, animals, and 

 plants. 



R. R. PARKER 

 Director 



Rocky Mountain Laboratory 

 Hamilton, Montana 

 April, 191*2 



