26 THE ENTOMOLOGIST. 



b. Black border very broad, occupying more than half 



the wing surface. 



a'. Lower teeth at extremity of clasper strong, 



well separated, the ventral edge of clasper 



concave centrally ... . narada. 



b'. Same teeth small, close together, ventral edge 



of clasper nowhere concave . . . annetta. 



Females. 



A. With blue (or purple) markings on fore wing only, or 



none at all . anita. 



3. "With blue (or purple) markings on both wings. 



a. The outer edge of blue on fore wing conforming to 



the contour of the hind margin, or, if not, then 



only of small extent ...... anita. 



b. Outer edge converging markedly with hind margin 



towards inner angle ; if only of small extent then 

 very much longer posteriorly than anteriorly . narada. 

 -c. The blue of approximately the same extent on both 

 wings, barely extending more than half-way from 

 base to hind margin ...... annetta. 



The males in this genus fall very readily into three well- 

 -defined groups, according to their genitalia. Individual varia- 

 tion of these parts, however, is considerable, and seasonal 

 variation seems also to occur; in a typical "wet" male from 

 ■Ceylon the teeth at the extremity of the claspers are not nearly 

 so strongly developed as are those of a " dry " male, with red 

 underside, from the same locality. The claspers in all three 

 species are only strongly chitinised outwardly, ventrally and 

 towards the base for a short distance from the extremity, the 

 bulk of the inner and dorsal surfaces being only membranous. 

 In all three the distal edge is characterised by having two large 

 teeth, one above the other, and a series of smaller ones above 

 these. Anita and annetta are very similar as to the arrangement 

 of these teeth, but annetta has the lower two the more delicate, 

 shorter in relation to the length of the whole clasper, and with 

 the lowest arising sooner than in anita, the remainder not 

 directed upwards to such an extent. Narada is separable at 

 once from either of the others by the size and different arrange- 

 ment of these two main teeth, and by the constriction of the 

 clasper about the middle. 



(1) HoRSFIELDIA ANITA, Hew. 



This species is only poorly and somewhat doubtfully separable 

 into local races, the differentiation of which is not very advanced. 



