46 



LV GROUP. 



c? . Tore wing : costa widely arched ; apex somewhat produced 

 but broadly rounded ; termen slightly concave below apex, then 

 oblique ; tornus rounded ; dorsum slightly sinuous ; cell more 

 than half length of wing. Hind wing comparatively short and 

 broad ; costa and termen united, formed into a bold continuous 

 curve, the latter deeply sinuous : dorsum straight ; cell compara- 

 tively short ; upper discocellular much longer than the middle 

 discocellular. Antennas slender, not quite half length of fore 

 wing ; club slight, gradual. 



. Occasionally in one form, always in the other forms, with a 

 broad spatulate tail at apex of vein 4. 



Key to the forms of the Memnon group. 



3 c?. 

 <i. Hind wing upperside : ground-colour 



throughout dark indigo-blue black. 

 a! ' . Hind wing upperside : without any 

 distinct continuous transverse medial 

 blue baud, but with internervular 

 streaks of blue scales, sometimes 

 entirely absent, wing then uniform 

 blue-black. 



a 2 . Such streaks absent or present, 

 when present not heavily marked, 

 not outwardly pointed, extended 



nearly to terminal margin P. memnon, race agenor, 



b 2 . Such streaks always present, heavily fp. 47. 



marked, pointed outwardly, and 



well short of terminal margin .... P. polymnestoroid.es, p. 52. 

 b'. Hind wing upperside : with a prominent 

 continuous transverse broad medial 



blue band P. mayo, p. 49. 



b. Hind wing upperside : ground-colour 

 basal third black, remainder more or 

 less pale blue. 



'. Hind wing upperside: outer portion 

 entirely pale blue with black mark- 

 ings P. polymnestor, p. 50. 



b'. Hind wing upperside : outer portion 

 pale blue with a very strong yellow 



tint P. polymnestor, race 



\_parinda, p. 51. 



a. Hind wing tailed. 



a. Tail uniform black, without a red 



spot near apex P. memnon, race agenor 



V. Tail not uniform black, with a red (tailed form), p. 49. 



spot near apex P. mayo, p. 49. 



