2 GEXERAL CATALOGUE OF THE HOMOPTERA 



description, with their type fixation dated at the earliest time the action 

 can logically be interpreted to have occurred. 



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 the mistakes, but to make certain that students 

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



The determination of typographical errors is not always easy. 

 These erroi's 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 substi- 

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

 misspelled and which are not; for example, NeohoTla and KeonoUa^ 

 or Alebra^ Elahra. and Eualebra, 



All variations in spelling, save those wliich 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 m the authoi^hip of nomina nova. He 

 uses them only when he thinks they are necessary. Xo 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. 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 authorities 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 mterpret 

 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 somider from the standpoint of no- 

 menclature than the tendency to eA'aluate references from previous 

 decades in the light of present day practices and procedures. 



In this series we have departed from our previous method of giv- 

 ing latinized names to varieties that m the past have been designated 

 by Arabic letters, Greek lettei-s, numbers, or other designations. All 

 varieties are catalogued, however, imder the first designation, regard- 

 less of its form. Some of these varieties may prove to be valid species 

 with further study and then may be given latmized designations. 



Primary homonyms of species have been replaced by nomina iwva: 

 secondary homonyms have been restored to their original names if 

 the homonymy has been relieA^ed by moving one or the other, or both 

 species, to other genera. 



