VI INTRODUCTION. 



species called Pinicolana, in 1850, whereas Zeller has a Grapho- 

 lilha under that name (vide-p.4d) in the ' Isis ' for 1846, a work 

 not very accessible, as is the case with many others ; hence the cause 

 of the difficulty of avoiding a duplicate name. Indeed few persons, 

 except those engaged in similar researches, can imagine the almost 

 utter impossibility of obtaining, either a knowledge of the various 

 periodicals and pamphlets, in which new species of insects are de- 

 scribed, or of procuring even a sight of the works themselves, when 

 their titles are ascertained, either in our public or private libraries." 



" Other diversities of nomenclature unavoidably arise from dif- 

 ferences of opinion in regard to the original names of the Vienna 

 Catalogue, &c. : one of these may be here alluded to ; viz., T. 

 variegana as applied in the following pages to Peronea Abild- 

 gaardana,* Douhleday. This name (variegana) is employed by 

 Guenee as the specific name of Antithesia Cynosbatella — although 

 previously used by him (Mi. p. 10) as a synonym to Abildgaardana 

 — but it is evidently so employed in error: the ' Theresians' say of 

 variegana, in their appellative description, ' Gelblichtweisser W. 

 mit dusterer Innenrandmackel, und buntem Untenrande, ' which 

 appears descriptive of the Peronea, and not of the Antithesia ; the 

 name is therefore hereafter applied accordingly : this leads to a final 

 remark on the subject of specific names, viz., that the Theresian 

 names are almost universally adopted in continental works, even 

 when unaccompanied by descriptions, from the fact, that in the ma- 

 jority of cases original specimens are said to exist in the Vienna 

 collection ; and thus by adhering to a similar plan, there will be 

 found a few names such as proximana, simpliciana, &c. restored, 

 from the original specimens, bearing Haworlh's autographic names, 



* This name is posleriur to Osbeckiana ; vide p. IJ 



