166 
SPOLIA ZEYLANICA. 
and most distinct. Cilia whitish-gray, intermixed with thick dark- 
fuscous hair-scales opposite darker spots and bands. 
Hindwing cleft firstly from about f, secondly from near base, 
thirdly from about f, fourthly from about fifthly from slightly 
within \ ; segments 1-5 linear, sixth segment stout, apparently 
forming extremity of a large glandular sac contained within and 
along dorsal margin of wing : whitish-gray, irregularly irrorated and 
crossed by about six ill-defined fuscous-brown transverse bands, 
of which a terminal and subterminal are the darkest and most 
distinct; ground-colour of whole of sixth segment, to base of wing, 
conspicuously darker. Cilia whitish-gray irregularly intermixed 
with dark-fuscous hair-scales, which are well developed opposite 
darker markings on segments. 
Figure 6. 
Type (No. 7,684) in Coll. Bainbrigge Fletcher. 
Habitat. —Ceylon, North-Central Province, Anuradhapura. 
November, 1908 (G. B. de Mowbray). 
Observation .—The unique type-specimen is unfortunately in poor 
condition, and I should have hesitated to describe it as a novelty, 
were its specific distinctness dependent on mere colour-markings. 
Its minute size, however, combined with the proportionate fission 
of the wings, and especially the extraordinarily thickened sixth 
segment of the hind wing, sufficiently characterize 0. microscopica as 
distinct from every other species hitherto described in this family. 
It is still smaller than O. pygmcea , which has been described as 
“ much the smallest species of the genus.” 0. nannodactyla, Rebel, 
also expanding only 7 mm. and described from Sokotra, is apparently 
very near 0. pygmcea , Meyr., but lias the third palpal joint very 
short and almost hidden in the scaling of the second joint. 
