140 REVISION OF AUSTRALIAN TORTRICINA, 



contributed to the following records, acknowledgment being 

 made in each instance; records of locality are attributed to the 

 collector from whom they were first received; the collector's name 

 (added in brackets) must be understood to refer to all those 

 localities in the same State which precede it without the inter- 

 vention of another collector's name; if no name is given, the 

 observation is my own, except in the case of a few records from 

 the islands, where the collector's name is unknown to me. The 

 South Australian and West Australian species were collected 

 principally during m}' journeys in 1882 and 1886 respectively. 



This paper includes full characters of all families and genera, 

 with partial synonyms of genera (so far as seemed useful to 

 Australian students); a catalogue of all species, with full Aus- 

 tralian synonymy; descriptions of all new species, with additional 

 notes or supplementary descriptions in the case of species pre- 

 viously but unsufficiently described; full records of localities; 

 and short recitals of larval habits when recorded, or full par- 

 ticulars if new. Tabulations of the genera are given, but I 

 have not attempted tabulations of the species, because in 

 those genera where they would be most needed, it seemed 

 impossible to make them of practical value; the species are so 

 similar, the colouring so obscure, and the markings often so 

 irregular, indefinite, and variable, that it is impracticable to 

 state distinctions and base categories on a single concise phrase. 

 An attempt to do so in the case of Capua and Tortrix, for 

 instance, would have been more likely to mislead than to edify. 

 The group is admittedly a difficult one, and there is no easy 

 road to its comprehension; students are advised to study the 

 descriptions closely, and, in the case of nearly related species, to 

 notice particularly the slight structural differences in the 

 secondary sexual characters. Any collector who comes across 

 one of the more local species will do well to devote attention to 

 securing a good series of it, with a view to its proper compre- 

 hension. Little has yet been done towards studying the larval 

 habits, and it is much to be desired that collectors should give 

 more time to this, which would well repay them; probably many 



