10 Transactions.— Zoology. 
more or less slightly greyish-tinged, closely but irregularly irrorated with 
blackish ; a suffused curved blackish spot extending from inner margin near 
base to base of costa ; an irregular oblique blackish patch in dise at $ from 
base, extending suffusedly to costa, and suffusedly connected beneath with a 
small blackish spot on inner margin at 1, its posterior edge bordered by a 
pale oblique outwardly curved line from } of costa to before middle of inner 
margin, shortly dentate at 4 from costa, posteriorily margined by a blackish 
line, forming a small spot on costa and a rather larger one on inner margin; 
a small oblique transverse clear white spot in dise beyond middle, surrounded 
by a blackish suffusion, forming a black spot below middle, and a black spot 
on costa at 2; an indistinct obscurely-dentate pale line, margined on each 
side indistinctly with blackish, from costa at 4 to inner margin before anal 
angle, somewhat angulated inwards below sosla, thence gently curved, 
anterior blaek line forming two small confluent black spots towards inner 
margin, posterior line forming a blackish wedge-shaped spot on costa : cilia 
ochreous-white, with a regularly-interrupted blackish-grey line towards 
base, and another towards extremities, costal cilia white, with a blackish- 
grey spot above last transverse line. Hindwings grey, rather darker 
posteriorily, with a faintly indicated pale line a little before hindmargin ; 
cilia ochreous-grey-whitish, with two light grey lines. 
Female.—941—1143 mm.  Forewings very narrow, oblong; hindwings 
proportionately shorter, rounded ; markings as in male, but cramped and 
obscured. 
Superficially the male of this species rather suggests a small dark Thin. 
leucophthalma, especially by the similarity of the white discal spot, but the 
black basal markings of the latter species afford a ready distinction. 
I found this species plentifully, sitting on the face of the bare volcanic 
rock which projects in many places from the soil of the hills near Christ- 
church ; it was reluctant to take wing, perhaps owing to the prevalence of 
high winds. The female, when disturbed, ran with considerable activity, 
but was quite incapable of flying. 
Larva moderately stout, cylindrical, wrinkled, very sluggish ; rather 
dark greyish-fuscous on back, much lighter on sides; spots minute, blackish, 
obscure ; head fuscous. Feeds beneath a light shelter of silk on lichen-dust 
on rocks, living in a crevice, and i issuing forth beneath its shelter to feed. I 
found the imago in fresh condition in March, and at the same time I 
discovered the larva in all stages, so that there i is probably a succession of 
broods. 
4. Dierycnopnora, Z. 
Antenne of male very finely ciliated. Labial palpi rather short, some- 
what triangular. Forewings with hindmargin twice indented on upper half; 
