BY E. MEYRICK. 331 



posterior half suffused with dark fuscous; cilia rather dark 

 fuscous. 



Adelaide, South Australia, from November to January; eleven 

 specimens (Lower, Guest). 



115. P. thanatodes, Low. 



(Gelechia thanatodes, Low., Trans. Roy. Soc. S. Austr. 1893, 

 170.) 



9. 13 mm. Only differs from the preceding in having abdomen 

 and hindwings wholly dark fuscous. 



Adelaide, South Australia; the original type, which I have 

 seen, is still unique. It is doubtful whether this is anything but 

 an exceptional variety of the preceding, but no intermediate 

 forms have occurred, although the typical P. loxodesma has been 

 taken in plenty, and I agree with Mr. Lower that it is desirable 

 to treat them as distinct at present. The size given by Mr. 

 Lower is too small. 



29. Hemiarcha, n.g. 



Antennae f , in $ simple, basal joint moderate, without pecten. 

 Labial palpi long, recurved, second joint thickened with scales, 

 somewhat roughened beneath, terminal joint as long as second, 

 acute. Forewings : 2 and 3 stalked, 7 and 8 stalked or sometimes 

 out of 6, 7 to costa. Hindwings over 1, trapezoidal, apex 

 rounded, termen hardly sinuate, cilia |; 3 and 4 connate, 5 some- 

 what approximated to 4, 6 and 7 stalked. 



Type H. thermochroa. Imago with forewings elongate, apex 

 obtuse, termen obliquely rounded. 



Forewings with fascia from costa at|; 7 and 8 out of 6 .. 116. macroplaca. 

 Forewings without such fascia; 6 separate 117. thermochroa. 



116. H. macrojjlaca, Low. 



(Gelechia macrojylaca, Low., Trans. Roy. Soc. S. Austr, 1893, 

 170.) 



$. 15-16 mm. Head and thorax pale ochreous, brownish- 

 tinged, posterior edge of thorax with three dark fuscous dots. 



