76 The Eev. Francis Augustus Walker on a 



said to have patches, but only streaks converging to a 

 point on the anterior wings, and forming an edging to 

 the dark brown within, which in all the females replaces 

 the velvety black of the male. The shape and posi- 

 tion of the green markings on the posterior wings of 

 both the ordinary female and this variety are precisely 

 the same ; but, as already indicated, by being brighter 

 in colour in the latter they appear to exceed in quantity 

 those of the typical female. 



But the greatest difference between the ordinary female 

 and this variety consists in the total absence in the latter 

 of the dusky pencilling near the apex of the anterior 

 wings, and the very indistinct figuring of the row of 

 spots in the margin of the posterior wings that causes the 

 ordinary female in this respect to resemble a Diadema. 



The ordinary female has three white spots on the 

 upper part of the border of the posterior wing, and 

 lower down four grey ones ; the variety here described 

 has only two smaller white spots, and the grey ones are 

 decidedly more indistinct. 



As regards the under side, this specimen is seen to be 

 unmistakeably a female by the dusky pencilling of its 

 anterior wings, in which respect it closely resembles the 

 ordinary female, the male having little or no pencilling 

 there ; but in the whitish markings of the posterior 

 wings, it far more nearly resembles the male, possessing 

 less pronounced and smaller markings, and having a 

 less continuous scalloped band than in the ordinary 

 female. Indeed, it has even fewer markings than the 

 male, possessing very slight indications of the second, 

 inner, and fainter band which may be observed both in 

 the typical male and female. 



All male specimens of 0. Brookiana have a tinge of 

 blue within the green on the inner margin of the pos- 

 terior wings, and near the point of contact with the 

 body. In the ordinary female, and also in the specimen 

 here described, this blue tinge is replaced by a level 

 blue stripe. On the under side of the posterior wings 

 the blue markings of this variety appear to be precisely 

 similar to those of the ordinary female, whereas the 

 male has a third slight additional dash of blue that 

 neither the typical female nor this variety possesses. 

 On the anterior wings (underside) the blue in the male 

 is almost confined to one blue stripe beneath the 



