110 " Qynandromorp/rmii" and Kindred Prohlems 



and the smaller typical, and the corresponding spots on the two sides 

 are nearly all unlike in size and shape. There is also an abnormal 

 extension of the black and the green basal scales, well seen in the 

 figure (PI. XXII, fig. 12). This is probably an example of heterochroism, 

 though the spotting of the undersides of blues is notoriously liable to 

 some asymmetry. Many of these unequal gynaudromorphs show some 

 degree of asymmetry of the under side, and one in my possession is 

 typical on one side, ab. parisieiinis on the other (PI. XXII, figs. 12 a 

 and 12 b). 



Whether Mr Pickett's specimen is gynandromorphous as well as 

 hcterochroic I cannot decide with certainty. 



In .some the male scales are chiefly situated near the base, in others 

 near the apex, and in others along the costa or along the hind border of 

 the wing. In some, small patches occur, which if cut out i'rom their 

 surroundings would be identified as a piece of wing from a male 

 (PI. XXIII, figs. 14, 15 and Hi). I have one where most of the blue 

 \ scales are near the apex and the apex is the part most obviously 



reduced in size (PI. XXII, fig. 13), but a better example is in 

 Mr T. W. Hall's collection. This is purely female in appearance except 

 for a small collection of blue scales close to the right apex, perhaps 

 50 in all, but amongst them there are several androconia. There is 

 a slight blunting of this apex, but no diminution of size in the rest 

 of the wing. 



Under the microscope the arrangement of scales in these specimens 

 is seen to be very irregular, in some the blue scales are largely single, 

 in others they occur in small or large groups (PI. XXIV, fig. 17). 



The genitalia of six, in addition to those dissected completely, have 

 been examined and all show external armature of purely female type. 

 Ovaries full of ova and a well-formed bursa copulatrix could be re- 

 cognised. They could therefore almost certainly produce fertile ova in 

 a majority of instances. 



This remarkable race of gynandromorphs is peculiar in that the 

 admixture of male tissue with female appears to cause invariably a 

 reduction in size, though the male curidoii is considerably larger than 

 the female and the reverse eff'ect would be expected. Gynandromorphs 

 of this species are very rare in other localities, only six being re- 

 corded, and are for the most part of the halved or predominantly male 

 form. 



In addition to these undoubted gynandromorphs a very small number 

 of females are found in which one or more streaks of blue occur, sharply 



