88 SPOLIA ZEYLANICA. 
The length of the anterior tibize is 0°54 mm.; of the middle tibize 
0°6 mm. ; of the posterior tibia 1mm. The lengths of the tarsal] 
joints in millims. are: in the fore foot 0-22, 0:06, 0°07 ; in the mid 
foot 0°3, 0°06, 0°07; in the hind foot 0°42, 0°08, 0°08. The 
ratio of the hind tarsal joints is therefore as 54: 1: 1. First hind 
tarsal joint with about 17 ctenidiobothria. Claws (fig. 71) with 
stout tooth fairly distant from the apex and sharp basal angle ; 
empodial appendix setiform. 
Wing-membrane hyaline. Pterostigma (fig. 52) rather narrow ; 
m, discharges into the wing-apex. Scales of fore wing brownish 
black with golden mottling (fig. 10). The ground scales are shining 
gray, the large cover scales dull and very dark. The golden spots 
are distributed as follows :—Hinder border with 6 marginal spots 
between the ends of the veins ; the first of these spots (at the end 
of the first quarter of the wing) is drawn out to a narrow interrupted 
cross band ; anterior border with 4 marginal spots between the 
ends of the veins, of which the first is again produced as a several 
times interrupted cross band which ends at the third posterior 
marginal spot; between these spots occur irregularly disposed 
smaller spots. Wing base golden, likewise the space between 
anterior margin and subcosta. Marginal pubescence moderately 
long, brown, at the golden spots yellowish and shining golden. 
Hind wing with narrow radial cell; r, arising midway between m, 
and m,. Marginal hair long, pale brown. Membrane red violet 
iridescent to intense green. 
Ground scales (fig. 53 gs) ovate, somewhat concave at end or 
rarely straight cut; cover scales attenuating towards the base, 
broad at the end, truncate with faint shallow concavity ; marginal 
scales (fig. 51 rs) fusiform, border with fine microscopic serrations ; 
macrochete (fig. 51 mch) tuberculate dentate in the apical 
half. 
Length of fore wing 2°4 mm. wing expanse 5}mm.; Ceylon. 
Peradeniya “on tree trunk, February, 1905, one specimen, col- 
lected by Mr. E. E. Green. 
Perientomum argentatum, n. sp. (Figs. 14, 50, 75). 
Head pale brown ; the long close-set hair on forehead and vertex 
is silver white, inclined downwards on the forehead, upwards on the 
vertex. Eyes brown, with very short, fine, and extremely compact 
sammet-like pubescence. Antenne thin, about one-half length of 
fore wing, clear brown becoming gradually darker towards the apex ; 
