470 DESCRIPTIONS OF AUSTRALIAN MICRO-LEPIDOPTERA, 



mostly rather local, but usually abundant where they occur. A 

 large proportion, at least, of the larvse must feed on grass, possibly 

 in the roots ; this is almost certain from the habits of the imagos, 

 but I have not hitherto succeeded in finding a single one. 



The genus may be taken as typical of the group of Oecophoridce 

 with vein 7 of the forewings ending in the hindmargin or apex ; 

 the more extensive, more highly developed, and more characteris- 

 tically Australian of the two. The smaller and more triangular- 

 winged species placed towards the end of the genus appear to me 

 to be the most ancestral ; their affinity being with Eulechria and 

 Peltophora. 



Sixty species are given here, and there can be no doubt that 

 many other and perhaps more beautiful forms remain to be 

 discovered, 

 la. Head yellow. 



2a. Forewings with well-defined longitudinal streak. 

 3a. Ground colour yellow. 

 4a. With a curved posterior dark fascia. 

 5a. Space beyond fascia fuscous-grey. 



6a. Inner margin dark fuscous 177. arabella. 



6b, ,, „ yellow 180. irruptella. 



5b. „ „ yellow. 



6a. Cilia of hindwings towards anal angle yellowish 178. biophora. 



6b. „ „ „ wholly grey 179. ancylotoxa. 



4b. Without dark fascia. 



5a, With a dark fuscous streak along fold 186. auriceps. 



5b. Without „ ,, „ 



6a. With a short oblique dark streak before apex. 



7 a. With a dark costal streak. 



8a. Shoulders dark fuscous 189. latifissella. 



8b. Anterior half of thorax wholly dark fuscous.. 190. hypocausta. 



7b. Without „ „ „ 188. molliculella. 



6b. Without „ ,, ,, 



7a. Costal edge dark fuscous. 



8a. With a red subcostal streak 218. pretiocella. 



8b. Without,, „ „ ..217. crocobapta. 



