140 



Micr. — Small groups of brown scales scattered all over the 

 wing amongst the blue ones. Androconia numerous on. 

 both forewings. 

 Underside like a female. 

 Micr. — Small groups of scales of male colour scattered' 



amongst those of female colour. 

 Abdomen male in appearance. 



This is a symmetrical mixed gynandromorph with male 

 element preponderating on upper-, female on underside. 

 (2) Gynandromorphous /*. icarus, Clare, 1914. 



General appearance female, approaching ab. avrulea. 

 Small streaks of male colour on right forewing and on both 

 hindwings. On these areas androconia are as numerous as 

 on areas of the same size and situation in a normal male. 

 Abdomen female in appearance. It contained two ovaries. 

 External genitalia male. 

 In addition Dr. Cockayne gave the following descriptions and 

 details of the gynandromorphs exhibited by Mr. T. W. Hall: — 

 (3) Mr. Hall's P. icams. ? Gynandromorphous. 



Upperside of a brilliant blue, like that of At/riades tlietis.. 

 Streak of brown on left forewing running from base to 

 margin, a broad band of similar colour along costa of left 

 hindwing. Orange lunules on upperside like a normal 

 female. No androconia could be found. 

 Micr. — Underside showed that a large part was covered by 

 scales similar in structure and colour to those normally 

 found only at base. They were distributed irregularly in 

 long streaks on all four wings, especially on right forewing^ 

 where they extended almost to the margin. This is a 

 similar condition to that present in the A. coridon 

 exhibited by Mr. H. B. Wilhams. 

 (4) Mr. Hall's Royston A. coridon (gynandro.). 



This looks like a normal female, but there is slight blunting 



of the apex of the right forewing. Mear the apex are 



about 50 blue scales, and amongst them are eight 



androconia. It is therefore a predominantly female 



gynandromorph. 



In conclusion Dr. Cockayne remarked that there was evidently 



a race of A. coridon producing gynandromorphs of predominantly 



female type at Royston, and that the descent was probably direct. 



The evidence in favour of this view is that the genital organs in the 



