348 DESCRIPTIONS OF MICRO-LEPIDOPTERA, 



understand how, when such a form of wing had prevailed for some 

 moderate period, when again species with more pointed (but on the 

 whole somewhat broader) wings were produced, the termination of 

 vein 7 was found to have slipped round from the costa to the 

 hindniargin, and thus another type was established, of which the 

 hindmarginal termination was the most persistent character. It 

 should be observed that there are strictly only these two types, the 

 apical termination being properly regarded as a special case of the 

 hindmarginal. Phlceopola may be considered as a development 

 from Oecopbora itself (but not immediate, a connecting link being 

 required), and as closely approaching the parent form of Eidechria; 

 it differs from both by the strong thoracic crest, and the absence of 

 the antennal pecten, both of which characters, however, recur in 

 several of the allied genera. The genus should be of very consider- 

 able antiquity. There is one New Zealand species ; the Australian 

 species are principally southern, and especially Tasmanian. 

 There is considerable reason to suppose that the larvoe feed in bark 

 or dead wood, as with many species of Oecophora. 



1 have at present twelve species, of which the following is a 

 tabulation : — 



la. Hind wings with a darker central lunule...l35. din ocosma. 

 lb. ,, without darker lunule. 



2a. Hind wings whitish-yellow, at least towards 



base 14 1. confusella. 



2b. ,, fuscous or grey. 



3a. Fore wings snow-white 142. synchyta. 



3b. „ more or less greyish or ochreous- 



tinged. 

 4a With a large clear blackish dorsal triangle... 14 6. melanodelta. 

 4b. Without defined dorsal spot. 

 5a. Forewings strongly dilated posteriorly. 

 6a. Costal spots sufiusedly darker. 



7a. With a blackish streak from costa along fold.. 137. semocausta. 

 7b. Without streak on fold. 



8a. Antennas dark fuscous 136. asbolcea. 



8b. „ annulated with whitish-ochreous... 138. helica. 



