ABERRATIONS OF CEYLON BUTTERFLIES. 6 



certain spots and a marked crowding together of those on the 

 discal area of both wings. The differences from normal may 

 be particularized as follows : — 



Fore wing. — The basal transverse streak is missing from 

 the cell. The two innermost spots in interspace 1 — normally 

 widely separated — are here brought into close apposition 

 in the male, and united into a single elongate spot in the 

 female. The spots of the discal series are shifted inwards to 

 the extreme base of the several interspaces, the spot on inter- 

 space 2 (of the female) being completely suppressed. The 

 broad transverse streaks at the apex of the cell are more or 

 less confluent and (with those of the discal series) form a 

 crowded central patch of black spots. 



Hind wing. — There is a similar but less strongly marked 

 crowding of the discal and cell spots, and the discal spot on 

 interspace 1 is missing in both sexes. 



(Colombo Museum, Reg. Nos. 1,610 and 1,611.) 



6. Argynnis hyperbius. 



PI. I., fig. 6. 



This interesting gynandromorph was caught by Mr. F. G. 

 Saunder at Nuwara Eliya (date uncertain), and presented to 

 the Museum. The left wings are those of a typical male, and 

 the right wings of a typical female hyperbius. The external 

 genital organs are of the male type. 



(Colombo Museum, Reg. No. 2,635.) 



Mr. F. Hannyngton, of Madras, gives me the followiug 

 references to similar freaks of this species : — 



" Journ. Bombay Nat. Hist.," Vol. VIII., p. 152. This 

 example is said to have been a male (as regards genitaha) , but 

 to have had a wing pattern of the female type on one side. 



" Journ. As. Soc, Bengal," Vol. LXIII., p. 9. Figm^es a 

 bilateral Argynnis niphe ( — hyperbius), with male genitalia. 

 Bred by Mrs. Robson. These two references apparently 

 refer to the same individual. 



Mr. Hannyngton also mentions that a Mr. Wilson, late of 

 Ceylon, took a gynandromorph of this species on Mount 

 Pedro (Nuwara Eliya) some years ago. 



