PAPILIONINJS. 141 



cell and the discal area being rich golden-yellow or paler olivescent-yellow, crossed 

 by broad black veins, and in some specimens bearing a small black subanal and a 

 costal spot, or more rarely a row of four spots ; base of cell and submedian ai'ea 

 thickly clothed with very fine long black hairs. Ciha of both wings alternated with 

 white. Underside. Fo7-ewing duller black ; tlie outer veins and end of cell more or 

 less slightly bordered with bluish-grey streaks. Hindiviiitj as ou upperside ; the 

 abdominal margin brown. 



Female. Upperside paler. Forewlng dark olivescent brownish-black, with the 

 outer veins and end of the cell longitudinally bordered with dusky olivescent-grey 

 scales, nindwing with broad black basal area and outer marginal band, the discal 

 area olivescent-yellow crossed by broad black veins and an outer curved confluent 

 row of large ovate spots, which latter partly coalesce with the marginal band, the 

 intervening submarginal yellow spaces being thus more or less obliterated ; the 

 discal space between the lower median and submedian vein dusky-grey. Cilia of 

 both wings alternated with white between the veins, Underside. Forewlng duller 

 black, the vein streaks more defined and bluish-grey. Hiiulwing as on upperside. 



Thorax, head, antennas and legs black ; abdomen above olivescent brownish- 

 black, and in the male with slender yellow segmental bands, sides and beneath 

 yellow, with a lateral row of black segmental spots in the male, and bands in the 

 female; collar, and sides of thorax beneath crimson. 



Expanse, <S S-J- to 6, ? G^ to 7 inches. 



Larva. — Cylindrical ; dull purple-brown, with two dorsal rows, and anterior 

 and lateral rows of fleshy tubercles, those ou the eighth segment and a streak from 

 its base to lower end of seventh segment being pale pink; between the tubercles are 

 dark brown streaks. Feeds on Aristolochia. 



Pupa. — Pale purplish-ochreous ; bent backward anteriorly ; thorax conical, the 

 top flattened and its sides angled ; wing-cases dilated and flattened laterally in the 

 middle, their outer edge acute ; two middle segments of abdomen with a dorsal pair 

 of conical prominences. 



Habitat. — Ceylon. 



Distribution and Habits. — " This very fine insect is not uncommon in Ceylon 

 in open woods, and may often be seen flying in pairs ; — a female in the first place 

 rising slowly and nearly vertically into the air, and then followed, at a short interval 

 in the same direction and with the same style of flight, by a male, the two keeping 

 about two or three feet apart, rising and falling in the air in perfect unison, as if for 

 a period under the influence of a spell or of a kind of animal magnetism. The 

 phenomenon recalls to mind the flying of two paper kites one above the other ; l)oth 

 attached by a common string held in the hand, so simultaneously do the insects 

 move together whilst keeping at the same distance apart. Sometimes a second or 



