236 
HELIOZONA; NICAEA; PREPARCTIA; OCNOGYNA. By Dr. W. v. Rothschild. 
aurantiaca. 
lianga. 
longipennis. 
hannyng- 
toni. 
as aurantiaca Rothsch. (26 g). It has a still narrower black margin than veitschi, and instead of the miniate 
basal spot of this species the forewing except the apical third, is partly coloured dull orange-yellow, partly 
veined so. In New Guinea durvillei occurs singly, though not rarely. As it flies in bright sunshine, the metallic 
golden green lustre of the body is very conspicuous, and together with the rose-chafers visiting the same blossoms, 
Cocytia belongs to the most characteristic phases of its patria. 
V. Subfamily: Arctiinae. 
The division of the exotic butterflies of this group deviates from that in the Palearctic’ Part, by the 
fact that here the sense of the name Arctiinae is kept separate and comprises more than 500 forms, which in 
the first part were distinguished as Micrarctiinae, Spilosominae and Arctiinae s. s. In the Palearctic Part this 
separation has been done in the same way as stated on page 45 of Vol. II, for the sake of an easier survey 
and not in order to attribute the significance of scientifically established subfamilies to groups only arti¬ 
ficially brought together. Thus, whilst in the palearctic region the three groups of Micrarctiinae , Spilosominae 
and Arctiinae s. s. form 3 almost equally numerous divisions of about a hundred forms, the Indo-Australian 
forms belonging hereto, would almost unexceptionally be inserted in the group of the Spilosomiinae, so that 
such a separation would be here of no importance to the review. 
1. Genus: Heliozona Hmps. 
Proboscis fully developed; palpi directed forward and extended just beyond the anterior head; $ antennae 
doubly combed with short branches, the anterior part serrately dentated, those of the $ serrate-dentate; the 
middle spurs of the posterior tibiae are absent; the base of the abdomen is clad with shaggy hair. Vein 3 of 
the forewing rises close before the lower cell-angle, 4 and 5 from the angle, 6 from the upper angle, 7, 8, 9, 10 
are petioled, 11 separate. In the hindwing vein 3 and 5 rise from the cell-angle, 6 and 7 from the upper angle; 
8 from the middle of the cell. One species. 
H. lianga Semp. (19 a). Body and wings blackish-brown, a broad, yellow, oblique discal band from 
the costa to the proximal angle right through the forewing. A yellow dot on each shoulder-cover. Length of 
forewing: 26, $ 36 mm. East Mindanao (Philippines). Flying from May to October. 
2. Genus: Hicaea Moore. 
Different, from Heliozona by the ciliated antennae and the smooth scaling, as well as by vein 5 of the 
forewing, rising above the lower cell-angle and 6 proceeding either from the angle or being petioled with 7, 
8, 9, 10; 10 rises after 7; vein 5 of the hindwing rises above the lower cell-angle and 8 from the middle of the 
cell. One species. 
N. longipennis Wkr. (Vol. II, t. 18 d). Head and thorax black, tegulae and patagia margined with 
yellow; abdomen yellow, with one dorsal and two lateral rows of black spots. Forewings black, 3 white dots 
in the basal third of the costa and 3 oblique transverse bands of white spots, in the distal two thirds of the 
wing. The basal two thirds of the hindwing bright yellow, the base and 5 large spots black; the apical third 
black, with a white spot. Length of forewing: 26 to 34 mm. West China, West and East Himalaya, Assam. 
3. Genus: Hreparetia Hmps. 
Differs from Heliozona by the longer palpi and the presence of the middle spurs at the posterior tibiae. 
3 species, only one occurring in the Indo-Australian region; the two others, being palearctic, have been dealt 
with in Vol. II (p. 97) and figured there on t. 17 h and i. 
P. hannyngtoni Hmps. (19 a). Head and antennae black; tegulae milky-white; thorax black, shoulder- 
covers with a broad, milky-white distal margin; abdomen above bright red, beneath black; a middle dorsal 
row of black transverse streaks and 2 lateral, black hair-tufts on the first ring. Forewing black, with a number 
of curved and tortuous white transverse lines and markings. Hindwing bright red, with 4 very tortuous black 
transverse bands and an extremely fine black distal margin, fringes yellow. Length of forewing: 38 mm. North 
West India. 
4. Genus: Ocnogyna Led. 
Glossa stunted; palpi porrect, extending to the anterior head and, like the head, thorax and abdomen, 
with very long hairing. Antennae doubly combed, in the $ with long, in the $ with short teeth; the anterior 
tibiae at the end with a long thorn, outside with a short one. The middle spurs of the posterior tibiae are absent. 
Vein 3 of the forewing rises near the lower cell-angle, 5 above the angle; 7, 8, 9, 10 are petioled, 11 is separate. 
Vein 3 and 4 of the hinclwing rise from the lower cell-angle, 5 above the angle; 6, 7 from the upper angle 
