ORGYIA. By Dr. E. Strand. 
301 
0. dimidiata WJcr. (42 h). forewing orange-yellowish with darker undulate lines, the discal area dimidiata. 
posteriorly whitish, this area proximally bordered by a black transverse spot, the posterior half of the marginal 
area dusted dark brown. Hindwing and abdomen greyish buff. Expanse of wings: 23 mm. Sarawak. 
0. nebulosa Wkr. (42 h). <$ ferruginous reddish-brown, beneath greyish-brown. Palpi porrect, hairy, nebulosa. 
obtuse. Antennae long-combed. Forewing coloured shade-like, in the middle of a darker brown; the proximal, 
median and distal lines blackish and dentate, the second proximally margined with white; a submarginal line 
composed of blackish moon-spots. Length of body: 8 mm; expanse of wings: 20% mm. Sarawak. 
0. osseata Wkr. (42 h). $ brown. Palpi broad, hairy, obtuse. Antennae with very long combs. Forewing osseata. 
purple, with 3 blackish, irregular lines margined with grey, the 4th or submarginal line is the most distinct 
and formed of blackish moon-spots; the veins are towards the costa of a whitish grey, and a similarly coloured 
discal spot encloses two interrupted black and brown streaks; at the proximal angle a white streak. Length 
of body: 9,3 mm; expanse of wings: 25 mm. Sarawak. 
0. atra Pag. $ expanse 10 mm. Body and wings uni-coloured blackish-brown. Antennae black, atra. 
strongly combed. New Pomerania. 
0. flavovittata Pag. cL Allied with O. postica (42 i), but somewhat larger and with brownish forewings flaioviitata. 
crossed by blackish undulate lines, and blackish hindwings crossed in the middle by a radiating, yellowish stripe 
from the ground to the distal margin. Shortlands Islands. 
0. nigriplaga Swinh. (42 i). $ antennae grey. Palpi, head, thorax, and forewings olive ochreous, the nigriplaga. 
forewing usually lighter towards the apex and with a blackish-brown discal spot connected by a thin band 
with a similar, though smaller spot on the posterior margin. Hindwing blackish-brown. Under surface blackish 
brown with ochreous margins. Abdomen brown. Expanse of wings: 24% mm. North Borneo (Perissiu). Allied 
with O. nigrocrocea Wkr. (42 i). 
0. dewara Sivinh. (42 i). <$ antennae, body and wings of a dark reddish brown, teeth of antennae dewara. 
black. Thorax and forewings with many light reddish-pink markings difficult to describe. Forewing with 
dark brown, very irregular transverse bands and with a submarginal row of large brown spots on a light 
ground. Hindwing uni-colourecl and almost black. Fringes of both wings at the ends ochreous-white. Under 
surface of a much lighter brown and both wings imi-coloured. Under surface of the body ochreous. Expanse 
of wings: 27 mm. Forewing uncommonly narrow for on Orgyia. Kapaur in New Guinea. 
0. postica Wkr. (= ceylanica Nietn., ludekingi Snell.) (42 i). $ 24 to 28 mm. Head, thorax, and postica. 
abdomen brown. Forewing brown, with an indistinct, slanting, subbasal line, undulate ante- and postmedian 
lines approaching each other at the lower cell-angle, the part between them of a somewhat bluish-grey tint, 
and with an undulate dark line margined with white on each side of the discocellular; two indistinct, undulate 
submarginal lines; the apex slightly coloured grey and with some subapical, dark streaks. Hindwing dark 
brown. $ with stunted wings. — Larva half an inch long, yellowish, scantily haired brown, one dorsal and 
two lateral brown bands, paired tufts of long hair on the 1st and 11th segment directed forward and backward; 
lateral tufts of grey hair on the 4th and 5t.h rings, on the dorsum of the 4th to 7th segments tufts of yellow 
hair, head red. Lives on Caesalpina sp. and on almond-trees and apple-trees. Pupal stage in Manila for 
5 or 6 days. — It flies in Luzon in January to April, July and October. India, Formosa, Ceylon, Burma, Borneo, 
Java, New Guinea, Celebes, Amboina, New Pomerania. — ocularis Moore deviates from typical O. postica occularis. 
by its smaller size (expanse of wings: 21% mm), lighter colouring and less distinctly prominent marking. Calcutta. 
0. australis Wkr. (42 i). ^ grey, uni-coloured; <$ (= canifascia Wkr.) is dark brown, forewing with australis. 
2 black zigzag transverse lines and between them a whitish nebulous band partly covered by 2 black moon-spots 
forming the discal marking, near the base a grey spot and another one near the anal angle, at the apex a whitish 
patch cohering with 3 black longitudinal streaks, marginal spots black and moon-shaped. Expanse of wings: 
33 mm. Larva brownish-grey with very long hair. Head with a tuft of long, black, knotted hair on each side 
Australia (Brisbane). 
0. retinopepla Loiver. $ head, antennae and legs dull white, face and legs mixed with an ochreous retinopepla. 
brownish tint; pinnae brown, 8. Thorax and abdomen ochreous-brown, beneath greyish-white. Forewing oblong- 
triangular, the costal margin slightly curved, the distal margin gently rounded; light ochreous-brown, markings 
of a darker brown; two extinct bands, the first from % of the costal margin to % of the proximal margin, distally 
curved, its costal margin blurred, the second from 3 / 4 of the costal margin to % of the proximal margin, triangu- 
latly expanded on the costal margin, behind the middle proximally curved and everywhere margined with 
