168 



basal patch indicated by two well-defined black spots at about 

 one-fourth, median patch very indistinct, slightly darker than 

 ground-colour, anterior edge from one-third of costa to about 

 middle of inner margin, posterior from before middle of costa 

 to anal angle, with a deep wedge-shaped indentation in middle, 

 edged somewhat by a few l^lack scales ; a small patch of black 

 scales in disc beyond ; costa and inner margin strigulated 

 throughout with well-defined black dots, those on apical portion 

 of costa being larger and more tooth-like ; cilia pale-ochreous, 

 with an indistinct median line at anal angle blackish. Hind- 

 wings and cilia fuscous, spotted with darker colour ; cilia with 

 a well-marked darker basal line. 



Three specimens at Glen Osmond, and two at Blackwood, S.A., 

 in October. This is a difficult species to get in good condition, 

 but w^hen fresh it is a very neat insect. 



DiCHELIA THERMATERIMMA, U. Sp. 



Male and female, 12 mm. Head, antenna?, thorax, and les^s 

 dark fuscous, tibiae and tarsi with whitish rings, posterior legs 

 greyish, palpi ochreous-grey suffused with fuscous, abdomen grey. 

 Forewings elongate, moderately dilated ; dark fuscous ; basal 

 patch well-defined, blackish, limited by a blacker line from one- 

 fourth costa to one-third inner margin ; a sufiiised blackish line 

 from about middle of costa to about middle of inner margin ; whole 

 space of wing beyond this darker fuscous ; space between last 

 mentioned line and basal patch varying from dull-ochreous to 

 reddish-ochreous, with a few waved obscure transverse blackish 

 lines ; a row of about seven or eight small ochreous white 

 quadrate spots along costa throughout ; cilia fuscous, tips greyish. 

 Hindwings dark-grey, spotted with darker ; cilia grey, with a 

 darker basal line. 



Always recognisable by the patch of reddish colour after basal 

 patch. Glen Osmond, Blackwood, and Parkside, S.A., during 

 April ; rather common. ]Mr. Meyrick has it from Tasmania. 



CONCHYLID^. 



HeTEROCROSSA MIMICA, 01. sp. 



Male and female, 18-20 mm. Head, palpi, antennae, thorax, 

 and abdomen white. Antennae annulated with fuscous, basal 

 joint of palpi beneath fuscous. Thorax with a well-defined 

 anterior brown band. Legs dark-fuscous, posterior pair whitish, 

 all tarsi banded with white. Forewings elongate, posteriorly 

 somewhat dilated, costa gently arched, apex rounded, hindmargin 

 very obliquely rounded ; white ; a brownish streak on costa from 

 base to one-fifth; four blackish equidistant oblique spots, occupying 

 median-third of costa ; an irregular triangular patch of mixed 



