Meyricx.—On New Zealand Geometrina. 83 
towards base, anteriorly dark-margined ; two obscure curved subdentate 
adjacent whitish lines about 4, followed by a dark line; a blackish discal 
dot; a very irregular dentate curved dark grey line beyond middle, followed 
by two adjacent whitish lines; a sharply dentate obscure whitish subterminal 
line, anteriorly dark-margined. Hindwings moderate, hindmargin rounded ; 
markings as in forewings, but more obscure, paler and more suffused 
towards base. 
A fine species, with a peculiar bluish tinge. 
I took two specimens at rest on rock-faces in the Otira Gorge, at 1,800 
feet, in January, and saw others. 
48. Lar. cinerearia, Dbld. 
(Cidaria (?) cinerearia, Dbld., Dieff. N.Z., ii., 286; Larentia (?) inverata, Walk., 1199, Butl. 
Cat., pl. iii., 11; Larentia semisignata, Walk., 1200; Larentia inoperata, Walk., 1201 ; 
Larentia punctilineata, Walk., 1202, Butl. Cat., pl. iii., 12; Cidaria dissociata, Walk., 
1734; Cidaria semilisata, Walk., 1735 ; Larentia corcularia, Gn., E.M.M., v., 61; 
Larentia infantaria, Gn., E.M.M., v., 62; Helastia eupitheciaria, Gn., E.M.M., v., 95; 
? Cidaria spheriata, Feld., cxxxi., 14.) 
Male, female.—16-25 mm. Forewings moderate, hindmargin rounded ; 
ochreous-whitish or grey-whitish, irrorated with grey ; numerous dark grey 
or dark fuscous regular dentate strie, tending to form dots on veins; two 
adjacent near base, two others before middle, and three beyond middle 
darker and more conspicuous, especially on upper half, where they are 
often marked with blackish; a small blackish discal dot; the three post- 
median lines twice irregularly sinuate in and above middle; a blackish 
interrupted hindmarginal line. Hindwings moderate, hindmargin rounded ; 
pale grey, from + to hindmargin faintly marked with dentate angulated 
darker stris. 
Varies considerably in size, colour, and strength of marking; but I can 
find no point of distinction to justify the separation of any form as a 
distinct species. Three main forms occur; one large, greyer, and more ` 
uniform, without strong markings; a second of middle size, whiter and 
generally strongly marked, sometimes bluish-tinged, only found in the 
hills; and a third small, greyish but ochreous-tinged, strongly marked; 
these are connected by scarcer intermediate forms, and are, I believe, 
due to the direct effect of food and situation. The larva feeds on 
lichens. 
Christchurch, Castle Hill (3,000 feet), Dunedin, Lake Wakatipu (3,500 
feet), and probably generally, at rest on walls, fences, rocks, ete., from 
December to March, very common ; fifty-four specimens, 
