218 
POLIOSIA; RHANGANA; BLAVIA. By Dr. M. Draldt. 
marginata. 
pulverea. 
muricolor. 
parca. 
punefivena. 
binotala. 
brumira. 
flavogrisea. 
cubitifera. 
fragil is. 
p unci at a. 
caliginosa. 
138. Genus: Poliosia Hmp 
With longer and narrower forewings than the preceding. On the forewing the 1st radial rises from 
below the upper cell-angle; on the hindwing the 1st median and 3rd radial are fused. 2nd radial absent, and 
the subcostal petioled with the 1st radial. 
P. marginata Hmps. (14 c). The whitish-grey forewing exhibits a broad, brownish-grey marginal 
band. Hindwing whitish, at the margin brownish, with a large, brownish-grey scent-scale spot beneath. Borneo; 
Pulo Laut. 
P. pulverea Hmps. (14 1) is brownish-grey, on the forewing dusted light brown, in the inner-marginal 
area browner. Hindwing of a purer brown; scent-scale spot greyish-brown. Borneo (Sarawak); Pulo Laut. 
P. muricolor Wkr. (14 c) is greyish-brown with a yellowish-white costal-marginal streak and fringes. 
Borneo. — subsp. parva Moore is larger than the type, costal margin, fringes and vertex of a purer and deeper 
yellow, also, the fringes of the hindwings yellow. Sikkim, Assam. 
P. punctivena Hmps. (14 1) shows on the greyish-brown forewing on the submedian fold below the 
cell-end a black dot. Head and collar yellow. Fringes yellowish. Sikkim. 
P. binotata Hmps. (14 c) differs by its greyish-brown head and collar, and by two black dots in and 
below the cell-end. Ceylon. 
P. brunnea Moore (= normalis Hmps.) (14 c) is unicolorously dark greyish-brown without black 
dots. Hindwings in the $ lighter, in the $ darker greyish-brown. Sikkim. Assam. 
P. flavogrisea Rothsch. Head, antennae and thorax tan-coloured orange, abdomen above sooty black, 
sides and anal tuft orange-yellow. Forewing tan-coloured orange, at the apex a small black spot. Hindwing 
dark sooty grey. Length of forewings: 12 mm. Oetakwa River. Dutch New Guinea. 
P. cubitifera Hmps. (14 1). Yellow, dusted brown, with a flawed, purple-brown, postmedian transverse 
line. Hindwings light yellow. Sikkim. Assam. 
P. fragilis Lucas (14 1) L light ochreous-yellow, on the hindwing lighter; fore- and hindlegs brownish. 
Queensland. 
139. Genus: Itliniigana Moore. 
Distinguished from the preceding by shorter tibial spurs, a produced apex of the forewing, much shorter 
discocells, from the upper angle of which all the subcostal veins proceed on a joint footstalk with the 1st radial; 
the 1st subcostal vein anastomoses with the costal. On the hindwing both the median veins are petioled and 
the two lower radial veins absent, the subcostal being petioled with the 1st radial. 
R. punctata Moore (14 c) is a small, unicolorously ochreous-brown insect with fine black dots exten¬ 
ding round the apex and distal margin. Calcutta. 
140. Genus: Blavia Wkr. 
Forehead smoothly scaled, palpi beneath hairy, abdomen smoothly scaled. Forewing long and narrow 
with a straight costal margin; 1st median and 3rd radial fused, 2nd radial absent; the 1st rising from below 
the upper cell-angle; the 2nd subcostal vein separately from the cell, the 1st rising rectangularly and being 
fused with the costal. On the hindwing the 1st median and 3rd radial are fused, the 2nd radial is absent, and 
the subcostal and 1st radial rise on a long footstalk. The <$ shows above in the disc a large scent-scale spot. 
B. caliginosa Wkr. has a blackish-brown body and somewhat lighter wings with a more reddish tint 
towards the margins; fringes yellowish. Expanse of wings: 20 mm. Borneo (Sarawak). 
