THE SOUTH LONDON NATURAL HISTORY SOCIETY- — EXHIBITION. 269 



Melitaea varia : fine underside aberration. 



Parnassins apollo: with extremely large red spots on the costa and 

 disc of the hindwings. Bozen. 



Mr. T. W. Hall exhibited three cabinet drawers containing his 

 collection of Pobjoinmatus icarus, Aiiriadea coridon, and A. thetis 

 [bellari/Ks). Amongst the series of the first-named species were some 

 brilliantly blue and large females from Sligo. In the series of A. 

 coridon were examples of ab. ayiKiraplia and ab. fit'Diisyuf/rapha with 

 several gynandromorphous specimens and streaked females. The A. 

 thetis included a brilliant, streaked female and many underside aber- 

 rations. 



Dr. E. A. Cockayne exhibited the series of Ayriades: coridon already 

 described in the Knt. Becord on page 222, and stated that he had since 

 succeeded in finding androconia in all the six specimens dissected. He 

 also showed two further gynandromorphs, the species being Polyoni- 

 matus icarus, of which the following are the descriptions and details : — 



(1) Gynandromorphous P. icants, Sligo, 1914. 



Upperside like a male in shape and colour, but with two small 



orange lunules on each forewing and a row of orange lunules 



on each hindwing. 

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



wing amongst the blue ones. Androconia numerous on both 



forewings. 

 Undersides 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 P. icanis, Clare, 1914. 



General appearance female, approaching ab. coerulea. Small 

 streaks of male colour on right forewing and on both hind- 

 wings. 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. icarus. ? Gynandromorphous. 



Upperside of a brilliant blue, like that of Ayriades thetis. 

 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 con- 

 dition to that present in the A. coridon exhibited to-night by 

 Mr. H. B. Williams. 



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



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



