STICTOSIA; COSTARCHA. By Dr. M. Dbattdt. 
175 
C. harterti Elwes (17 a) is one of the smallest species, white with quite pale orange-yellow transverse harterti. 
lines and a similar costal margin as far as the posterior transverse line and 2 black discal dots; in the $ the 
costal margin is entirely white. Hongkong, Assam, Singapore. 
C. infantula Hmps. (16 1) has white forewings with 2 small, black discal spots, entirely absent trails- infaniuln. 
verse lines and a yellowish costal margin in the basal half. From Borneo and the Louisiads. In the latter islands 
(St. Aignan) a form occurs without any black discal dots: impuncta form. nov. (= ab. 1 Hmps.). hupvncta. 
C. sanguinea Motsch. with the form cruenta Leech have been dealt with in Vol. II, on p. 61 (fig. t. 12 a) sanguinea. 
and belong to the palearctic region. Another form: formosana form. nov. (— ab. 2 Hmps.) occurs in Formosa. 
It is much smaller (expanse of wings: 24 mm) with cpiite carmine hindwings and under surface, except some 
blackish-brown dusting in the cell. 
C. hamata Wkr. (= emergens Wkr.) (Vol. II, t. 12 a) also essentially belongs to the palearctic region, limn ala. 
but it occurs in Hongkong also on the Indo-Australian soil. It resembles the following, but the transverse bands 
are scarlet, not orange. 
C. inconclusa Wkr. (161) has white forewings with 4 orange-yellow transverse bands and 2 fine black incnmlvsa. 
discal dots. Hindwings pale yellow, in the $ orange. The latter exhibits only one discal dot on the forewing. 
From Borneo. In ab. nov. nexilis (= ab. 1 Hmps.) the two middle transverse stripes are closer together and ne.riHs. 
below the cell connected by an orange band. 
C. gelida Wkr. (Vol. II, t. 12 c), from the North West Himalaya, Assam, Sikkim, is easily recogni- gelida. 
zable by the olive-yellow transverse markings and 3 black rings in the discal area. 
C. gazella Moore (Vol. II, t. 12 c), from the Himalaya, is likewise unmistakable by the large gazrjia. 
orange-red discal ring and the orange markings being often connected. 
64. Genus: Stictosia Hmps. 
Proboscis well developed, the palpi are straight ly porrect and project beyond the forehead; male antennae 
ciliated, tibiae with long spurs. The costal margin of the rather broad forewing is strongly curved. The 1st 
median vein rises close below, the 2nd radial close above the lower cell-angle; the 1st radial from below the 
upper cell-angle; the 1st and 2nd subcostal veins rise separately from the cell. On the hindwing the 1st median 
and 3rd radial rise on a joint footstalk; the subcostal and 1st radial anastomose in the <$, in the $ they are 
on a long petiole. The costal vein shows in the $ a small scent-scale spot and the subcostal exhibits a concave 
indentation just before the cell-angle. 
S. flexilisana Wkr. (— decubitana Wkr., illatalis Wkr.) (16 f) shows on the yellowish-brown forewings fle.rUisana 
somewhat darker small scales, a black discal dot and traces of ante- and postmedian darker transverse lines. 
Hindwings whitish, in the $ darker. Borneo. 
S. pallidiniaculata Rothsch. Head yellowish-white; antennae brownish-yellow; thorax and abdomen palUdhna- 
reddish-yellow with a very large, somewhat darker anal tuft. Forewings wood-brown, the base, 2 cuneiform cvlatci 
spots at the costal margin and an oblique, more or less interrupted discal band reddish yellowish-white. Hind¬ 
wing reddish-grey with a broad wood-brown marginal band. Length of forewings: tP/a mm- Biagi, Mambara 
River, British New Guinea, in January. 
S. variegata Rothsch. Head, antennae and thorax yellow, the tips of the shoulder-covers and the rar'mjata. 
metathorax reddish-grey; abdomen greyish Isabel-coloured. Forewing golden yellow; an oblong basal spot 
below the median, an irregular, broad, oblique discal band and a broad postmedian macular stripe reddish-grey, 
scantily strewn with yellow scales. Hindwings reddish yellowish-white. Length of forewings: 9 mm. Biagi on 
the Mambara River, British New Guinea, in March. 
65. Genus: CJostarcha Hmps. 
Very closely allied to the preceding genus and distinguished by erect palpi, in the <$ doubly combed 
antennae. On the forewing the venation is like in the preceding; on the hindwing the 1st median anastomoses 
with the 3rd radial. Subcostal and 1st radial rise on a joint footstalk. Only one species: 
