X.—THE GEOMETRIDAE. 97 
The expansion of the wings is 14 inches. Apart from the 
antennal characters it is somewhat like C. rubella in general 
appearance but differs from that species in its duller colouring, 
absence of the cloudy pinkish or purplish blush, less rounded 
apex and much less oblique termen. 
The perfect insect appears in February. It is fairly 
common on hills amongst Dracophyllum, Leucopogon and 
other shrubs. 
Described and figured from a specimen kindly lent 
to me by Mr. Clarke. 
CHLOROCLYSTIS HUMILIS. 
’ (Chloroclystis humilis, Philp., Trans. N.Z. Inst., xlix., 240.) 
(Plate XI., fig. 9 9.) 
This delicate-looking species was discovered by Mr. 
Pasco at) Queenstown, Lake Wakatipu. 
The expansion of the wings is $ inch. All the wings are 
pale greyish-white with numerous very fine wavy dark grey 
markings; there is a rather conspicuous series of black marks 
on the veins at about 2 and a series of sharp black terminal 
crescents. The termen of the fore-wings is slightly bowed, that 
of the hind-wings sinuate. Although rather an obscure form 
this insect is quite distinct from any of the other species of 
Chloroclystis, having evenly ciliated antennae in the male. 
The perfect insect appears in November. 
Described and figured from a specimen in the Pasco 
collection. 
CHLOROCLYSTIS SUFFUSA, n. sp. 
(Plate XII., fig. 16 9.) 
This large and conspicuous species was discovered by 
Mr. Morris N. Watt on Mount Egmont, at an altitude of 
about 3,000 feet above the sea-level. 
The expansion of the wings is 1 inch. The forewings are 
rather dark grey; there is a black-edged reddish-grey basal 
patch, a paler sub-basal area; the inner edge of the median band 
is broadly edged with blackish-brown; there is a broad black 
sub-costal patch reaching from the inner to the outer edge of the 
median band; a warm brown subterminal band, finely edged with 
green towards the base and a series of blackish terminal marks. 
The hind-wings are rather dark grey, slightly tinged with red- 
dish towards the dorsum where there are several blackish trans- 
verse lines. The cilia of all the wings are pinkish-grey barred 
with blackish. 
The perfect insect appears in January. 
Genus 6—HEUCYMATOGE, Hitibn. 
Face with cone of scales. Antennae in 4 ciliated. Palpi 
moderate, rough-scaled. Abdomen with slight crests throughout. 
Fore-wings: areole double. Hind-wings normal. 
A genus of moderate extent and general distribution, 
with the interesting feature of special development in the 
Hawaiian Islands. There are three New Zealand species. 
The markings on both fore- and hind-wings are 
specially adapted for disguise, whilst the insects are resting, 
with outspread wings, on tree-trunks. 
Gq 
HUCYMATOGE ARENOSA. 
(Hucymatoge arenosus, Howes, Trans. N.Z. Inst. xliii., 127, 
DU tea) 
(Plate XIIL., fig. 20 4.) 
This rather pale-coloured little species was discovered 
by Mr. W. G. Howes at Titahi Bay, on the northern shore 
of Cook Strait. It’ has also occurred at Moeraki, near 
Oamaru. 
The expansion of the wings is 14 inches. All the wings are 
pale ochreous traversed by numerous fine oblique brownish- 
ochreous transverse lines; there is an indistinct blackish line 
from the apex of the fore-wings to the middle of the dorsum 
and a fine black line on the hind-wings below the middle. All 
the veins are sharply dotted in black. 
The perfect insect appears from November till March. 
It is attracted by sugar, blossoms and light. 
Described and figured from a specimen in the 
Dominion Museum. 
HUCYMATOGE GOBIATA. 
(Cidaria gobiata, Feld. Reis. Nov., pl. exxxi. 2. Phibalapteryx 
simulans, Butl., Cist. Ent. ii. 506. Phibalapteryx ‘unduli- 
gera, ib. 506. Phibalapteryx rivularis, ib. 507. Scotosia 
gobiata, Meyr., Trans. N.Z. Inst. xvi. 70. Cephalissa 
gobiata, ib. xviii. 184.) 
(Plate XII., fig. 21; Plate I., fig. 45, larva.) 
This species has occurred at Auckland, Waimarino 
and Wellington in the North Island, but is not a very 
cemmon insect. In the South Island it has occurred at 
Christchurch, and is generally distributed throughout 
Otago and Southland. 
The expansion of the wings is 14 inches. The fore-wings, 
which have the costa rather strongly arched and the termen 
slightly oblique, are very pale purplish-grey with dark brown 
and pale reddish-brown markings; there are two very oblique, 
wavy, dark brown transverse lines on the dorsum at about 4 
and 4 which reach a little more than half way to the costa; 
between these two lines there are several fainter reddish-brown 
lines; a@ very conspicuous oblique line runs from the apex to the 
middle of dorsum; this line is double near the middle of its 
course where it encloses a small oval space; on either side of 
this oblique line there are numerous paler brown wavy lines 
which become considerably stronger and more reddish towards 
the termen; all the veins are dotted in brown. The hind-wings 
are very pale purplish-grey with a strong wavy dark brown trans- 
verse line below the middle and numerous fine paler brown 
transverse lines, redder towards the termen; all these lines fade 
away towards the costa. The head thorax and abdomen are pale 
purplish grey with brown transverse markings which corres- 
pond to a great extent with the lines on the fore- and hind- 
wings. 
The larva, which feeds on Coprosma areolata during 
the summer months, is about 1 inch in length, moderately 
stout, slightly attenuated at each end; pale dull brownish- 
green obscurely streaked and mottled with pale reddish- 
brown and blackish; there are two very large humps on 
segments 8 and 9; the skin is considerably wrinkled with 
a few scattered short bristles. This larva is of sluggish 
habits and very well adapted for concealment amongst the 
twigs of its foodplant. 
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