34 
XYRIDACMA; DERAMBILA. By L. B. Pbout. 
anterior half, where it generally forms a mere thread or may be entirely obsolete; transverse line of hindwing 
generally less vertical, reaching the costa nearer to the apex. Known from Milne Bay and Sariba Island, Bri¬ 
tish New Guinea, the type being a $ in the Tring Museum from the latter locality. 
46. Genus: Xyrhiac’iim Meyr. 
Palpus rather short. Antenna nearly simple. Hindtibia with all spurs. Build moderately robust. 
Wings with distal margin more or less crenulate; forewing with 1st subcostal anastomosing with costal, 2nd 
subcostal with 1st and afterwards with stalk of 3rd—4th, 1st median separate from 3rd radial; hindwing with 
costal vein slightly swollen near base, the subcostal here throwing out a slight protuberance towards it. Larva 
and pupa stout. Confined to New Zealand. 
hemiptera- X. hemipteraria Guen. (3 b) is distinguished by the less broad wings, more deeply crenulate margins 
ria ' and especially by having the hindwing produced to a strong tooth at the end of the 2nd subcostal. Variable. 
Larva on Veronica, closely resembling the stems of the foodplant; moderately stout, of fairly uniform width 
throughout . Pupa unusually robust, pale olive-brown, suffused with pink on wing-cases. Pupates among dead 
leaves, without making a cocoon. 
ustaria. X. ustaria Walk, is perhaps merely a form of the following. On an average smaller. The wings 
are relatively rather shorter, the distal margin of the hinclwing less strongly dentate. Both, but especially 
ustaria, excessively variable, with a marked protective resemblance to withered leaves. Walker’s type is 
ochreous brown, with cloudings of red-brown, looking as if it had been scorched, and with a distinct dark 
varians. median line on both wings. —- ab. varians Bull, is darker, with a short anterior ochreous band on forewing from 
the costa (or from subcostal nervules) close to the apex and with some slight or moderate ochreous clouding 
acliroiaria. behind the middle of the cell. — ab. achroiaria Feld. (3 c) is not much variegated, but has two small white dots 
hudsoni. between the radial veins of the forewing, sometimes also reproduced on the hindwing. — ab. hudsoni nov. is 
more purplish, the forewing at the base redder and with an irregular speckling of grey-white ,,no doubt imi- 
unilinea. tating the patches of mould which are often present on dead leaves 14 (Hudson). — ab. utlilinea nov. (3 b) 
has no distinct markings except a strong black median line on both wings and sometimes the small white 
dots of ab. acliroiaria. — Common in New Zealand, August to February or even in the winter. 
alectoraria. X. alectoraria Walk. (3 c) in addition to the distinctions noted above, differs from ustaria in its 
generally lighter colour, with the costal edge of the forewing nearly always and the fringes commonly strongly 
octomacula- rosy, and in wanting the black cell-dots. Walker’s type is weakly marked.—ab. octomaculata Th. Mieg (3 c) 
is characterized by having on each wing two large white, rosy-edged spots, which maybe entire or cut by dar¬ 
kened veins; one is placed distally to the cell and reaches the 2nd subcostal, the other is behind the base 
of the 2nd median. — The early stages have been described by Hudson and others. The egg is much flattened 
above; pale green at first, becoming olive-green. The larva feeds on Pittosporum and is pale green with yellow 
dots and stripes, a series of crimson dorsal blotches and crimson anal flap, prolegs and spiracles, beautifully 
assimilated to the buds of the food-plant. — Distribution similar to that of ustaria. 
47. Genus: Walk. 
Small, delicately-built white moths, with rather thinly-scaled wings, their margins smooth, the apex 
of the forewing acute, generally minutely produced. Face smooth. Antenna long, ciliated in the Legs long 
and slender; hindtibia with only one pair of spurs. Forewing with the 1st subcostal running into the costal, 2nd 
subcostal wanting. Hindwing with the costal approximated to the subcostal near the base and here thickened. 
Most of the species are Indo-Australian but several occur in Africa. The early stages are unknown. 
A. Section: Hindwing with 2nd subcostal not stalked. Hindleg of $ long and 
slender. Antennal ciliation of <$ very short. 
D. satelliata is very distinct from all the other species in having a conspicuous black spot on the 1st 
dentifera. radial vein of the forewing not far from the distal margin. — dentifera Moore (= efila Swinh.) is the form 
from N. India, Borneo, Talaut, Hainan and Formosa and has the markings fine and generally weak, the post- 
satelliata. median line becoming stronger at the hindmargin, particularly on the hindwing. — satelliata Walk. ( = galac- 
tina Th.-Mieg) has the markings much thicker and browner, a very large cell-mark conspicuous on both wings. 
rectiscripla. Celebes, Sula and Ceram. — rectiscripta Prout (3 c) from Dutch New Guinea, Ron and the Key Islands, 
should probably be regarded as a separate species, as the postmedian line of the forewing, which is thicker 
