2 GENERAL CATALOGUE OF THE HOMOPTERA 



issued with different pagination, this pagination is indicated in paren- 

 theses following the page numbers of the original. In a few cases, 

 where the matter has been reprinted under a different title with differ- 

 ent pagination, separate references are given. Where authentic 

 editions have been republished, these have been indicated by separate 

 references. Genera established without included species have been 

 dated from their original description, with their type fixation dated at 

 the earliest time the action can logically be interpreted to have oc- 

 curred. Original spellings have been retained in all cases, except 

 obvious typographical errors. Typographical errors are indicated by 

 placing "[sic]" after the misspelled name. This is not for the purpose 

 of calling attention to mistakes, but to make certain that students 

 following the catalogue have a clear understanding of what is implied. 

 The determination of typographical errors is not always easy. 

 These errors range from clearly apparent transpositions of letters to 

 misspelled names of individuals, geographical locations, et cetera. So 

 many generic names have been formed by the transposition and sub- 

 stitution of letters that one is often at a loss to know which names are 

 misspelled and which are not; for example, Neoholla and Keonolla^ 

 ov Alebra^ Elabra^ and Eualebra. 



All variations in spelling save those which refer to endings only are 

 appropriately cross-referred. The species have also been listed under 

 every known generic combination so that it is possible to find any 

 species without recourse to the index, which will be published at the 

 completion of the Fascicle. 



The writer takes no pride in the authorship of nonvina nova. He 

 uses them only when he thinks they are necessary. No new names 

 are proposed for species or genera described by living authors without 

 first giving the original author an opportunity to correct primary or 

 secondary homonyms. 



A catalogue is not a revision of a group, and the location of the 

 genera and species in the present catalogue is merely an attempt to 

 reflect what is believed to be the general consensus of the best authori- 

 ties at the present time. Doubtful genera and species have been 

 included to call them to the attention of subsequent revisers. 



An attempt has been made throughout this catalogue to interpret 

 all references in the light of the period in which they were published. 

 This is not always easy and leads perhaps to erroneous conclusions 

 at times, but it is certainly much sounder from the standpoint of 

 nomenclature than the tendency to evaluate references from previous 

 decades in the light of present-day practices and procedures. 



In this series we have departed from our previous method of giving 

 latinized names to varieties that in the past have been designated by 

 Arabic letters, Greek letters, numbers, or other designations. All 



