A GYNANDROMORPH OF PAPILIO LYCOPHRON. 



273 



21. A Gynandromorph of Papilio lycophron Hbn. By 

 J. J. Joicey, F.L.S., F.Z.S., F.E.S., and G. Talbot, 

 F.E.S. 



[Received June 20, 1917 : Read November 20, 1917.] 

 (Plate II.*) 



This remarkable specimen is a well-marked example of gynan- 

 dromorphism, the right hind wing above being normal. It 

 belongs to the race phanias Roths. & Jord. 



Both fore wings are asymmetrical and each shows a large spot 

 in the end of the cell. The right fore wing has the band inter- 

 rupted between the submedian fold and vein 3, two small spots 

 being left below vein 2 ; the outer part of the spot in cellule 3 

 remains and the inner portion of it is nebulous, the spot in 4 is 

 indented distally. the spot in 5 is only represented by a streak 

 above vein 5, the spot in 6 is reduced distally, also the spot in 7. 

 The left fore wing shows some traces of the band in the median 

 area, and on the inner margin the spot in 4 is reduced as on the 

 other wing, the spot in 5 is slightly reduced anteriorly, that in 6 

 is represented by a curved proximal line and a distal dot, the one 

 in 7 reduced to a proximal dot. The right hind wing is normal 

 except for some orange scaling at the lower angle of the yellow 

 band. The left hind wing has the band invaded by streaks of 

 brown ground-colour, and notably a broad stripe filling the lower 

 part of the cell from the base to the end ; there is some orange 

 scaling at the lower angle of the band. The distal area is 

 damaged, but there is some green scaling in cellules 3-5 ; the 

 apical spot is much larger than on the other wing. 



The underside of the right fore iving is normal. The left fore 

 wing is darkened over the inner and median area and lower half 

 of the cell. The right hind wing has the red discal spots larger 

 than usual. The left hind iving is more strongly darkened than 

 above, leaving a yellow streak in the cell, in 7, and in 6, with 

 other minor traces of the band. The red spots are a little larger 

 than on the other wing, especially the apical spot. 



The abdomen bears some scattered dark-brown spots. 



This specimen was obtained by Mr.' A. E. Pratt at the 

 Rentema Falls on the Upper Amazon, North Peru. 



* For explanation of the Plate see p. 276. 



