32 



PLAN AND METHOD OF USING CATALOGUE 



The orders, families, tribes, genera, and species of 

 the bacteria here catalogued are listed in alphabetical 

 order as shown by the Table of Contents. More than 300 

 specific names of the bacteria which have in some way or 

 other been associated with insects or ticks are listed. 

 The system of bacterial classification followed is that 

 used in Bergey's Manual of Determinative Bacteriology 

 (1939, 5th edition). 



Under the appropriate order, family, tribe, and genus, 

 the scientific name for each species of bacterium is given 

 as a heading. When known, the specific name is followed 

 by the authority. On the next line, in parenthesis, are 

 given the important synonyms or names of bacteria similar 

 or identical to the species given in the heading. This 

 is followed by the names of the arthropods with which the 

 bacterium in question is associated. Next is a short 

 abstract or synopsis of the nature of its arthropod rela- 

 tionship. The references cited in the discussion are 

 listed after each cataloguing. Those references which 

 are marked with an asterisk are the references to the 

 papers in which the original description or mention of the 

 bacterium was made. This catalogue should not be considered 

 bibliographic. The references listed are those which will 

 give the reader the most readily available, complete, and 

 pertinent citations on the bacterium in question. The 

 indices should be used to find any particular bacterium 

 or insect. The bacteria are indexed separately from the 

 insects and ticks. 



The author has attempted to use the more recent names 

 of the insects and ticks listed, but may not have done so 

 in all cases. For the bacteria we have listed the name 

 of the bacterium as designated in the original reference 

 and its present name, according to Bergey's Manual. Cross 

 references to bacterial synonyms have been kept to a mini- 

 mum in the text. For the most part these have been shown 

 in the index. 



