424 DESCRIPTIONS OF AUSTRALIAN MICRO-LFPIDOPTERA, 



one or two, rarely more, larvae in each gall. Pupation takes 

 place inside the gall, without a cocoon. The larvse were found 

 in July about half-grown, and the imagos appeared in September. 



With regard to this and other Eucalyptus-feeding species, I 

 may say that it is generally very difficult to identify the species 

 of Eucalyptus on which they are found ; the general similarity of 

 these plants is very great, there are usually several kinds growing 

 near together, and the larvre are almost invariably found on 

 young saplings which have not yet developed their specific 

 characteristics. 



4. ISOCHORISTA, n. ff. 



Thorax smooth. Antennae in male somewhat thickened, shortly 

 ciliated. Palpi moderate, porrected, second joint broadly scaled, 

 rather truncate, terminal joint very short, distinct. Porewings 

 elongate-triangular, rather narrow, costa gently arched, in male 

 with fold towards base, hindmargin very obliquely rounded. 

 Hindwings elongate-trapezoidal, as broad as forewings. Pore- 

 wings with veins 7 and 8 stalked, vein 7 running to hindmargin. 

 Hindwings with veins 3 and 4 remote at origin and parallel, 5 

 equidistant from 4 and parallel, 6 and 7 stalked. 



Differs from all except Proselena in having veins 3, 4, 5 of the 

 hindwings all equidistant and parallel ; from Proselena it is at 

 once known by having veins 7 and 8 of the forewings stalked, 

 and by the costal fold of the male. In general superficies the 

 imagos much resemble some of the smaller species of Capua and 

 Dichelia. 



There are two species, of which /. panaeolana may be known 

 from /. ranulana by the presence of transverse leaden-metallic 

 markings. 



1. Isoch. ranulana, n. sp. 



? . 4"-5". Head, palpi, and thorax dull ochreous, thinly 

 mixed with fuscous. Antennse whitish-ochreous, sharply annul- 



