Page:Transactions NZ Institute Volume 15.djvu/49

Thorax ochreous-brown, with a suffused white central longitudinal stripe. Abdomen pale whitish-ochreous. Anterior and middle legs dark ochreous-fuscous; posterior legs ochreous-whitish. Forewings moderate, posteriorly dilated, costa very slightly arched, somewhat sinuate before middle, apex almost rectangular, hindmargin rather oblique, very faintly sinuate; rather light greyish-ochreous-brown, with a marked brassy-yellowish reflection; extreme costal edge very narrowly white throughout except at base, dilating into a broader ill-defined white suffusion at about ¾; a rather narrow sharply-defined white central longitudinal streak from base to hindmargin, rather attenuated towards base, very slightly curved near hindmargin, lower edge very indistinctly split a little before hindmargin; hindmarginal edge generally very narrowly white between central streak and costa; inner margin very narrowly and indistinctly suffused with whitish throughout more or less of its length: cilia whitish, base clear white. Hindwings pale whitish-fuscous-grey, hindmargin ochreous-tinged; cilia whitish.

Most allied to C. vittellus and C. simplex, resembling them in form of wing; from the former it differs by the costal edge being white nearly throughout, more brassy tint, larger size, and absence of distinct blackish hind-marginal dots, as well as by the whitish cilia; from the latter by the much darker colouring, more sharply-defined white markings, and absence of white suffusion on veins.

Taken plentifully by Mr. R. W. Fereday on Mount Hutt in January.

Male, female.—29–33 mm. Head light brownish-ochreous, with a narrow ill-defined whitish longitudinal stripe on each side above eyes, meeting above palpi. Maxillary palpi brownish-ochreous, apex whitish. Labial palpi moderate, brownish-ochreous, internally and at base beneath white. Antennæ dark fuscous. Thorax light brownish-ochreous. Abdomen pale ochreous. Anterior and middle legs greyish-fuscous; posterior legs grey-whitish. Forewings rather narrow, posteriorly dilated, costa at first very gently arched, more strongly on posterior half, faintly sinuate in middle, apex nearly rectangular, hindmargin moderately oblique, rather strongly rounded; greyish-ochreous, somewhat deeper on disc, with a slight brassy tinge; extreme costal edge very slenderly white from near base to apex; a very slender white line close beneath costa from base, merged in costal edge before middle; three or four slender indistinct short white streaks on veins towards posterior half of costa and apex; a narrow tolerably well-defined central longitudinal white streak from base to hindmargin, very slightly sinuate in middle and very slightly curved posteriorly, attenuated towards base; seven minute black dots on hindmargin: cilia whitish-grey. Hindwings pale grey, somewhat darker towards hindmargin; cilia whitish.