OETHOGONIA. 7.'// W. Warren. 161 



stigma pale edged with black; reniform black with grey ring; median shade dark and broad at costa; in 

 the terminal area are 3 subparallel narrow black lines, the inner two running obliquely from costa to 

 termen, the third interrupted reaches inner margin before the tomus; hindwing rufous grey, the termen 

 broadly blackish; fringes whitish chequered with dark; frons while; prothorax grey bordered with white; 

 thorax and abdomen lustrous pearly grey. Japan. Placed here provisionally; il- docs not seem to have 

 been observed since its original capture in some numbers by Dr. Holland. 



('). Genus: Orthogonisi Fldr. 



Tongue well-developed; palpi large, obliquely upturned, second segment broadly fringed with hair 

 in front, the third also rough with hair; frons smooth, but with a pad of hair; antennae of $ minutely 

 ciliated: thorax clothed with scales: the tegulae produced to form a ridge; prothorax triangularly crested; 

 wings ample; forewing with costa arched at base, the apex produced; the termen crenulate and bent at 

 middle, This and the succeeding genus are distinguished by their large and ample wings. Type Ortho- 

 gonia sera Fldr. 



0. sera Fldr. (38 g). Porewing pale grey, often tinged with rufous, or mossgreen, or fuscous, dusted sera. 

 and striated with darker: basal line developed into an irregular oblique band swollen on median and below 

 vein 1 : inner line angled outwards on median vein, sinuous above and below; outer biconcave, slightly 

 projecting outwards on vein 4; central area olive brown, often tinged with rufous or purplish, deeper 

 towards the edges and beyond the median shade; claviform stigma obscure, hidden by a dark shade, with 

 a dark spot at its tip: orbicular and reniform large, oblong, the former erect, the latter oblique, generally 

 filled up with leaden purple; submarginal line pale, diffuse, preceded by an olive shade containing a pair 

 of blackish spots one on each side of vein 5, and followed by a darker terminal area obliquely cut off 

 above 5: inner margin with a broad pale streak, whitish, ochreous, greenish, or orange red ; hindwing deep 

 olive fuscous: the fringe white with the base yellow or grey; — ab. purpurata ab. nov. (38 g) has the purpurata. 

 ground deep plum colour, undusted, with the dark areas, especially the terminal, much obscured; ab. 

 carneata ab. nor. (38 g) has the ground deep flesh colour, the dark markings much variegated with red camcala. 

 scales: ab. obscurata ab. nor. (38 h) is much darker; the ground colour dark grey, tinged often with obscurala. 

 rufous, or ochreous, or purple, and densely dappled with darker; the median vein and all the veins in 

 terminal area finely pale: the median area finely edged with pale dark-margined lines; the median area 

 itself deep purple brown or fulvous brown, rarely olive tinged; the terminal markings obscured or sub- 

 obsolete; ab. lilacina ab. nor. (38 h) is an extreme form, with the ground colour pale lavender-grey slightly lilacina. 

 speckled with green, and the dark areas pale or deeper green, varied with lavender-grey, the reniform of 

 this last colour: the costal edge red throughout; hindwing and underside of both wings much paler. 

 Found only in Japan and Central China. The form obscurata with the pale veins and markings is perhaps 

 a good species. 



0. plana Leech (39 a). Differs from sera in having the lower half of inner line straight and plana. 

 oblique inwards to near base, its upper half crenulate; the outer edge of the central area^ is dentate 

 lunulate. the teeth strongly marked with black on the veins; the pale submarginal line is straighter, 

 fulvous olive; in the typical form the whole ground colour is olive fulvous; the outer half of median area 

 beyond median shade deeper than the inner half; the orbicular stigma round, dark, in a pale ring; the 

 reniform large, elongated, fulvous with pale outline; the claviform slightly marked at its apex with black; 

 hindwing brownish fuscous, with rufous ochreous fringe; by far the commoner form seems to be the ab. 

 semigrisea ab. nor. (39 a), in which the outer half of the forewing is pale grey, tinged with rufous or semiijrisea. 

 darker grey and coarsely striated with fuscous; the fulvous of the central area also varies, becoming duller 

 and dark fuscous; less common is the ab. suffusa ab. nor. (39 b), dark olive fulvous throughout, the space suflusa. 

 beyond outer line and the basal area alone paler. Kecorded from various localities in W. China. 



0. plumbinotata Hmps. (38 h). Forewing greyish flesh colour, striated with darker; the median \,' A { a _ 



area dark olive fuscous flushed with purplish, except the inner costal half, which agrees in colour with the 



basal area and # is tinged with purplish; the grey round orbicular stigma lies on the border of this pale 



area: the lower third of the elongate reniform paler and plainer than the rest; the inner line, limiting the 



median area, is, like that of plana, straight and inwardly oblique; the outer line is less lunulate; the inner 



edge of the dark terminal area is curved from anal angle to vein 7, instead of being straight to vein 5 



and then obliquely truncate: inner margin pale-streaked; hindwing olive fuscous. W. China. 



on Yi'Li)in~ 

 0. canimaculata spec. nor. (= plumbinotata Hmps. ab. 1.) (39 a). Smaller than plumbinotata; the cu i a ( (L 



ground colour pale grey (paler in the $) tinged with purplish grey; the median and terminal areas deep 



purple fuscous, almost black; the basal area dark purplish, this hue also embracing the inner costal portion 



of median fascia but to a less extent than in plumbinotata; reniform stigma much less elongated; terminal 



