Meykick. — On New Zealand Micro-Lepidoptera. 25 



base externally brownish - ochreous. Labial palpi long, white, externally 

 greyish- ochreous, more fuscous towards apex. Antennae dark fuscous. 

 Thorax light ochreous, with a more or less distinct suffused white central 

 longitudinal stripe, sometimes obsolete. Abdomen ochreous-whitish, more 

 ochreous towards base, apex white. Anterior and middle legs whitish- 

 ochreous, suffused beneath with dark fuscous ; posterior legs whitish. 

 Forewings moderate, in female narrow, costa moderately arched, less 

 strongly in female, slightly sinuate in middle, apex acute, in female 

 rather produced, hindmargin rather strongly oblique, slightly rounded ; 

 pale ochreous ; a very slender white streak from base close beneath costa to 

 apex, on posterior half broader and more suffused, in female broader and 

 extending to costa ; veins towards hindmargin between median streak and 

 costa more or less suffused with white, more strongly in female ; a rather 

 narrow central longitudinal white streak from base to hindmargin, rather 

 attenuated towards base, very slightly curved towards hindmargin ; some- 

 times a slender white streak along vein 1 towards anal angle ; in female, 

 veins somewhat suffused with white towards hindmargin beneath median 

 streak ; a very slender white streak along inner margin from base to beyond 

 middle, posteriorly suffused : cilia shining white. Hindwings very pale 

 whitish-grey, in female white, hindmargin faintly ochreous-tinged ; cilia 

 white. 



Differs from all the allied species by the clear pale ochreous ground- 

 colour ; the white markings (except the central streak) are more suffused, 

 the cilia clear white, and the hindwings paler, being quite white in female. 

 In this and the allied species the central streak appears dark-margined 

 in part, but the effect is illusory, and due to the presence of deep 

 folds. 



Very common round Cbristchurch in November, December, February 

 and March, seemingly attached to the tussock-grass. 



9. Or. siriellus, n. sp. 



Female. — 26-30 mm. Head white, sides of crown dark brown. Maxillary 

 palpi white, towards base externally brown. Labial palpi moderate, white, 

 externally brown. Antennas dark fuscous. Thorax dark ochreous-brown, 

 on sides posteriorly paler and whitish-tinged, with a broad white central 

 longitudinal stripe. Abdomen ochreous-whitish. Anterior and middle legs 

 whitish-ochreous, beneath suffused with dark fuscous ; posterior legs whitish. 

 Forewings moderate, somewhat dilated, costa moderately arched, apex acute, 

 hindmargin nearly straight, moderately oblique ; dark brown, becoming 

 ochreous towards the inner and hindmargins ; a narrow silvery-white costal 

 streak from base to apex, attenuated on basal half, posteriorly suffused, 

 extreme costal edge sometimes brown about § ; a moderate nearly straight 



