E. A. CUCKAYNE 109 



The external genitalia wHjrc of ordinary female type. 



One in the Hodgson eollection at Cambridge shows a very slight 

 diniinuti(pn in the size of tht' right forewing and no additional blue 

 scales or andnjconia, but the right hindwing is mueh reduced and has 

 many blue scales and androconia. 



One of these partially halved gynandromorphs is an example of the 

 ab. semisi/ngrupha, but both wings are smaller on the left side, and 

 have numerous additional blue scales with androconia and male hair 

 scales (PI. XXII, fig. 14»). 



The following are the only exceptions to this peculiar halved 

 arrangement in these gynandromorphs. In one specimen diffuse blue 

 scaling occurred all over both forewings, and to a slight extent on the 

 hindwings. More blue scales were seen on the right side, and this 

 was a little smaller than the left. Androconia were seen on both fore- 

 wings, though more numerous on the right. The external genitalia 

 were of purely female form. There were two ovaries and a perfect 

 bursa copulatrix, but, as it was a dried specimen, finer details were 

 destroyed by softening the abdomen (PL XXII, fig. 9). 



Mr P. M. Bright has a specimen very similar, which has androconia 

 and male hair scales on both forewings, and Mr Pickett has one which 

 is very blue but shows only a few androconia on each forewing. It is 

 evidently a bluish female with the addition of a slight male element 

 on lioth sides (PI. XXII, fig. 8). Another interesting specimen, possibly 

 bilaterally gynandromoiphous, is in Mr Pickett's possession. There is 

 great asymmetry, and on the small side (left) are no blue scales, the 

 fringe is almost unspotted on the forewing, and no androconia can be 

 seen, whereas on the big side (right) there is a group of blue scales, male 

 hair scales, and androconia close to the central spot (PI. XXII, fig. 10). 

 A specimen in Mr Bright's collection is equal in size on both sides, 

 but the whole of the right forewing and the upper third of the hind- 

 wing are thickly covered with blue scales. Androconia are scarce. On 

 the under side the peculiar .scales usually confined to the basal area run 

 right out to the apex, forming a band along the costa. 



A remarkable unequal female, which I have examined, is in 

 Mr Pickett's collection. It has only one blue scale on the left or small 

 side and none on the right or big side, except for the basal scales 

 present in all females. (PI. XXII, figs. 11 and 12.) 



The lunules are much larger in both the wings on the larger side, 

 cori'csponding to ab. aurantia Tutt, and typical on the smaller side. 

 The undiT side is very asymmetrical, the larger side being ab. parisiensis 



