596 DESCRIPTIONS OP AUSTRALIAN MICRO-LEPIDOPTERA, 



176. Ther. insidiosa, n.sp. 



^. 9 mm. Head white, mixed with grey. Palpi whitish, 

 externally mixed with dark fuscous. Antennae whitish-fuscous. 

 Thorax and abdomen light grey. Legs dark fuscous, posterior pair 

 whitish. Forewings elongate, narrow, costa moderately arched, 

 apex roundpointed, hindmargin very obliquely rounded ; 7 and 8 

 stalked ; fuscous, densely and suffusedly irrorated throughout 

 with white, with some scattered dark fuscous scales ; a blackish 

 ill-defined longitudinal mark in disc before middle, a blackish dot 

 above fold beyond middle, and another in disc at f : cilia whitish- 

 fuscous. Hindwings grey ; cilia whitish-fuscous. 



Sydney, New South Wales ; in March, one specimen. 



177. Ther. schismatica, n.sp. 



2. 12-13 mm. Head white, more or less mixed with fuscous. 

 Palpi white, externally fuscous. Antennae whitish-fuscous. 

 Thorax white. Abdomen grey. Legs dark fuscous, posterior 

 ])air whitish. Forewings elongate, narrow, costa moderately 

 arched, apex acute, hindmargin sinuate, very oblique ; 7 and 8 

 separate; fuscous, towards inner margin sprinkled with whitish ; 

 a moderate white streak from near base along costa, leaving costa 

 before middle and proceeding as a subcostal streak to costa again 

 at I, extremities attenuated, beneath edged with a more or less 

 distinct dark fuscous suffusion ; a more or less distinct dark 

 fuscous suffused line along submedian fold : cilia whitish-fuscous. 

 Hindwings fuscous-grey ; cilia whitish-fuscous. 



Sydney, New South Wales ; in September, two specimens. 

 Larva 16-1 egged, rather stout, attenuated at posterior extremity, 

 with scattered short blackish hairs ; dull rather deep green, 

 variably suffused with purple, especially towards middle and on 

 sides ; subspiracular line whitish, distinct ; head greenish-ochre- 

 ous : it feeds openly on Styjyhelia viridis (Ej^acrideae), eating 

 away the entire substance of leaves from the edge, in August. 

 Pupa in a firm white cocoon amongst leaves. It is no doubt 

 possible that this larva, like that of Nematohola candescens, may 

 be a miner when young. 



