18 PAPILIONID.E. 



wing: adnervular pale streaks not prominent on the upperside, 

 more distinctly marked on the underside. Hind wing black, with 

 a very broad diseal slightly curved silky-yellow band or patch that 

 extends beyond the cell from interspaces 2 to 7, and is composed of 

 elongate outwardly emarginate yellow markings that are divided 

 only by the black veins. In most specimens the inner margin of 

 this band crosses the apex of the cell, but in many the cell is 

 entirely black. Abdomen with some black markings beneath and 

 a lateral row of black spots. $ . Differs from cerberus $ in the 

 much greater extent of the black on the hind wing. Interspace 1 

 with a pale dusky-white patch in the middle ; interspace 7 with an 

 inner and an outer yellow spot ; cell entirely black or nearly so, 

 sometimes, but rarely, with the yellow extended into the apex. 



Exp. J $ 165-175 mm. (6-6-6-95"). 



Hab. Ceylon. 



Larva. " Cylindrical, dull purple-brown, with two dorsal rows 

 and anterior and lateral rows of fleshy tubercles, those on 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." (Moore.) 



Pupa. " Pale purplish-ochreous, bent backwards 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." (Moore.) 



HECTOR GROUP. 



c? $ . Fore wing elongate, broader in $ than in d 1 ; costa 

 widely arched, apex produced, rounded ; termen oblique, straight, 

 or in the c? slightly concave in the middle, in the $ convex ; 

 dorsum straight, about half length of costa ; cell elongate, more 

 than half length of wing ; discocellulars nearly erect, upper not 

 much shorter than the middle ; veins 10 and 11 from the upper 

 half of subcostal vein. Hind wing elongate, costa arched ; termen 

 scalloped, produced into a tail at vein 4 ; tail not so long as in the 

 Coon Group, nor so distinctly and widely spatulate afc the tip, 

 in the typical form hector of even width to apex ; dorsum long, 

 straight ; cell a little longer than half length of wing ; veins 4 and 5 

 not approximate at base. Antennae about half length of fore 

 wing ; club long, narrow, gradual ; anal segment in d" without 

 valves. 



Key to the forms of the Hector Group. 



A. c? $ . Tail at apex of vein 4 in hind wing 



of even width, not spatulate at apex ____ 



B. c? $ Tail at apex of vein 4 in hind wing 



spatulate at apex. 

 a Hind wing upperside : cell entirely black, 



rarely with a small spot of white at apex. 



