474 



DESCRIPTIONS OF NEW AUSTRALIAN 

 LEPIDOPTERA. 



By Oswald B. Lower, F.L.S., F.E.S. 



GEOMETRIDiE. 



PSBUDOTERPNA XKNOMORPHA, 11. Sp. 



^. 36 mm. Head, palpi, antenna^, and thorax whitish-grey 

 finely mixed with ashy-grey. Abdomen ashy-grey, mixed with 

 fuscous. Legs fuscous, tibiae and tarsi narrowly banded with 

 white. Forewings elongate-triangular; termen waved, rounded; 

 pale whitish-grey, finely irrorated with fuscous and blackish 

 scales, so as to appear ashy-grey: a narrow oblique transverse 

 fuscous fascia, from costa at one-quarter to dorsum at middle; a 

 similar fascia from costa at about three-fifths to dorsum before 

 anal angle, gently curved inwards on lower two-thirds: a narrow 

 fuscous line from costa to very near angle of preceding fascia; a 

 sharply defined direct white streak from costa at five-sixths, 

 reaching nearly half across wing; a very obscure fuscous line 

 parallel to termen; a waved black line along termen. Hind- 

 wings with termen faintly waved; colour as in forewings; an 

 obscure narrow fuscous fascia, from costa at about three-quarters 

 to termen before anal angle; line along termen as in forewings; 

 cilia of both wings ashy-grey-whitish. Underside of both wings 

 as above; markings reproduced; a short transverse streak of 

 white on costa of hind wings at five-sixths, followed by a broad 

 light fuscous, somewhat suffused, band before termen throughout. 



Pinnaroo, South Australia; one specimen taken by Mr. R. S. 

 Lower, in March. 



Probably nearest P. ocultaria Don. The absence of any well 

 defined markings on the underside is peculiar. 



