94 SPOLIA ZEYLANICA. 
wing scales are shown in fig. 46 (ds = cover scale, gs = ground scale. 
rs == marginal scale). 
Length of fore wing 3mm., wing expanse 63 mm. 
Ceylon. Pattipola, 2,000 metres, February 22, 1902, one female 
(Biro coll.). 
Perientomum acutipenne, n. sp. (Figs. 66, 67, 72). 
Head reddish brown, occiput very pale; hair of forehead and 
vertex erect, moderately long, brown. Eyes red-brown, pubescence 
moderately compact, very short but stout. Antenne reddish 
brown, about three-fourths length of fore wing, very long and 
sparsely pubescent. Maxillary palp brown-yellow, apex of end 
joint brown. 
Thorax brown. Mesonotum covered with gray-brown shining 
scales. Legs brown-yellow. The length of the anterior tibie is 
0°6 mm. ; of the middle tibie 0°64 mm.; of the posterior tibiz 
1:05mm. The lengths of the tarsal joints in the fore foot are 0°27, 
0°07, 0°08 mm. ; in the middle foot 0°35, 0°07,? ; in the hind foot 
0:5, 0:08, 0°09. The ratio of the hind tarsal joints is therefore as 
54: 5:1. First hind tarsal joint with about 22 ctenidiobothria. 
Claws (fig. 72) slender ; tooth close before the apex, stout and acute ; 
empodial appendix setiform. 
Wings very narrow and strongly acuminate. Membrane hyaline ; 
veins very pale brownish ; pterostigma rather narrow (fig. 66). 
The scaling of the fore wing brown with faintly reddish tint and gray 
lustre. Marginal hair very long and strongly discrete, that of the 
anterior margin pale reddish brown, that of the hinder margin 
gray-black. The radial cell (R) of the hind wing very narrow. 
Marginal hair long and coloured as in the fore wing: Hind wing 
brightly iridescent blue green to violet. 
Scales of fore wing fusiform, apex acuminate. Ground scales 
(fig. 67 gs) shorter, cover scales (ds) longer. Marginal scales (hrs) 
slender, but in part very broad. 
Length of fore wing 2°5 mm., wing expanse, 54 mm. 
Ceylon, Maskeliya ; under dead bark of tree. April, 1905, one 
specimen, collected by Mr. EK. E. Green. 
Perientomum incultum, Hag., 1865. 
Amphientomum incultum, Hagen. Ent. Mo. Mag. IT., 1865, p. 149. 
A. lepidopterum, Hagen. Verh. Zool. Bot. Ges. Wien, 1866, p. 204. 
Perientomum incultum, Hagen, t.c. pp. 204 and 211. P. incultum, 
Hag., Enderein. Ann. Mus, Nat. Hung. I,, 1903, p. 322, Fossil in 
East Indian copal, 
