Pull . 23. IX. 08. 
CHALGOSIA. By Dr. K. Jordan. 
37 
Dmce) (7a). ?: white, the veins usually only slightly browned, hindmarginal area of the hindwing mostly 
yellow. The light form of the cf similar to the ?, veins and distal margin of the forewing blackish brown, 
forewing beneath blue in the basal third, this area shining through above; sometimes there is a blue band 
behind the middle. In the second form: cf-f. nitida nov., which I only know from West Sumatra, the nitida. 
upper surface of the hindwing and the under surface of both wings are strongly suffused with blue, the 
white is also very much reduced above on the forewing and the yellow hindmarginal area is often only 
present beneath (name-type). This dark form recalls the c ? of Cijclosia pieridoides. 
C. hamiltoni Swinh. (7b). cf and ? similar. Vertex and pronotum blue, neck red. Forewing green, hamiltoni. 
purple-brown in a light falling obliquely from the front, between the veins with yellowish white streaks and 
spots, of which the largest stand in a row running obliquely from the costal margin of the forewing towards 
the hinder angle. Hindwing yellowish white, posteriorly yellow, distal margin and the veins before it blue. 
The veins on the under surface blue. Ventral margin of the 8. dorsal segment of the cd strongly dentate 
on the inside and distally produced into a pointed hook. — Khasia Hills, Assam. 
C. pretiosa. Only in Ceylon. Pronotum in the middle glossy green like the mesonotum. Forewing 
above coppery green, not striped with white, a narrow band interrupted at the hindmargin of the cell and 
accompanied by black spots white, as are also some small spots situated before the apex. Hindwing and 
abdomen above glossy blue. Hindwing beneath white, with small submarginal spots. Three rather strikingly 
different forms, which do not seem to occur together; unfortunately more exact observations are still wanting. 
— eximia subsp. nov. (7 b) has a very narrow white band, beneath the forewing is almost entirely white to eximia. 
the median band, and the subapical band is interrupted; hindwing above white from the costa to the hind- 
margin of the cell, this spot not extending distally beyond the end of the cell; vertex not red. Horton 
Plains, found in September. — pretiosa Walk. Vertex red, band of the forewing broader than in the pre- pretiosa. 
ceding, forewing beneath blue from the base to the median band, the white subapical band not interrupted; 
the white costal spot on the upperside of the hindwing smaller. Haldunnula, February to March; Pundaloya. — 
albina Hamps. Hindwing above white, base and distal margin blue. Found at an elevation of 4000 to 5000 ft. albina. 
C. venosa. Likewise only in Ceylon. Vertex always red, pronotum in the middle always green. 
? more extended yellowish white than cf. Forewing black, the veins green, hindmargin yellowish white to 
the median band, the stripe proximally widened into the cell, this area in the ¥ always, in the cf often 
connected at the hindmargin of the cell with the white median band, the black median band consequently 
interrupted. Hindwing yellowish white, in the cf with marginal band, in the ? with one or several submarginal 
spots. Hindwing beneath with black streak anteriorly in the cell. — cf variable. In the cf-f. quadrifasciata quadri- 
Moore (= thallo Hamps. partim) the hindwing is posteriorly suffused with blackish or blue from the distal fosciata. 
margin (only in cfcf ?); in lower situations. The cf-f. venosa Walk. (= similata Moore) (7 b) has a moderately venosa. 
broad marginal band of the hindwing; in the hills. In the cf-f. myrrhina Hamps. the marginal band of the hind- myrrhina. 
wing is reduced to a few subapical spots, and the forewing is green, spotted with black between the veins; Pundaloya. 
C. affinis Guer. (7 b). Vertex and neck red, pronotum green, rarely copper-red, distally black between affinis. 
the veins; a band behind the middle and a few small spots before the apex yellowish white. Hindwing 
yellowish white, with black marginal band, wdiich rarely reaches to the middle of the margin. Beneath the 
forewing has a white subapical band instead of the small spots of the upper surface, and the hindwing has' 
a row of spots before the anterior part of the distal margin. South India. 
C. auxo. Forewing above green, distally black between the veins. Hindwing beneath with black 
marginal band, which often incloses blue or white spots. — albata Moore, from North-West India and Nepal: albata. 
pronotum usually green in the middle; forewing pale brownish green in the basal half, the hindmargin and 
often also the veins between base and band white; hindwing pure white, without black streak in the cell; 
the marginal band not reaching to the anal angle. — idaeoides H.-Schaff. (7 b). Forewing much more glossy idaeoides. 
green or blue than in the preceding form; hindwing yellowish, more rarely white, distal margin blue, often a 
black streak in the cell, rarely an indication of an oblique band from this streak to the marginal band. Assam: 
Khasia Hills. — argentata Moore (= adalifa Walk, nec Doubl., virginalis Men. nec H.-Schaff) (7 c), from Sikkim argentata. 
and North-East Assam. Forewing white at the hindmargin, this stripe widened basally into the cell; hindwing 
white or yellowish. — campa subsp. nov. Similar to albata, more vivid green and blue, the basal area of the campa. 
forewing posteriorly more broadly striped with white, the distal margin of the yellowish hindwing broader, 
usually widened posteriorly, the widened part proximally diffuse; cell of the hindwing beneath with a broad 
black streak; pronotum red. Tonkin. — diana Btlr. (7c), from Formosa; likewise small; the blue-green basal diana. 
area of the forewing incloses posteriorly to the cell a large white patch, which is separated from the broad 
median band by two black, blue-edged spots and from the hindmargin by a blue streak, this white patch very 
distinct also on the under surface; hindwing with a black streak in the cell, at least beneath. — In auxo L. auxo. 
(= tiberina Cr., pectinicornis L.) the forewing above and beneath is black and green-blue, the white median 
band is narrow; the hindwing has beneath a very large black spot in the cell and is also above suffused 
with black in the cell and posteriorly before the distal margin; in ab. thallo L. (= guerini Krb., pectini- thallo. 
cornis Guer.) the hindwing is for the most part black, only a lunular patch at the end of the cell is purer 
white. In South-East China. 
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