200 Dr. F. A. Dixey on 



there is a strong tendency for the apical portion of the 

 dark border to fuse with the submarginal series of dark 

 spots, thus forming a well-marked apical patch. A small 

 discocellular spot may be present on the fore-wing of the 

 male, especially in specimens from west of Lake Victoria 

 Nyanza, but only in rare instances on the hind-wing. A 

 similar discocellular spot is always present on the fore- 

 wing of the female, and in the wet-season form on the 

 hind- wing as well. Very rarely there may be in the 

 female a slight indication of a dark spot in the space 

 between the median and submedian veins of the fore- 

 wing; this is shown in the figure of the type in Peters' 

 Reise* Beneath, the general surface of both wings in 

 the wet-season male is white with more or less dark vein- 

 ing; this veining in a series of males from west of the 

 Victoria Nyanza is extremely well marked, especially on 

 the hind-wing. A submarginal series of spots is more or 

 less visible on both fore- and hind-wing. These in the 

 series last referred to are highly developed, and are fre- 

 quently united into a conspicuous submarginal band, 

 which, however, in the fore-wing does not extend further 

 backward than the space between the second and third 

 median branches. The discocellular spots are always 

 present on both fore- and hind- wings. The underside of 

 the wet-season female varies a good deal according to 

 locality. The hind-wing and apex of fore-wing are usually 

 yellow; the remainder of the fore-wing, white. The sub- 

 marginal spot between the second and third median is 

 always conspicuous, the rest of the submarginal series may 

 disappear. There is, however, nearly always a submarginal 

 chain visible on the hind-wing, and in females from west 

 of the Victoria Nyanza the submarginal band is as well 

 developed on both wings as that of the males from the 

 same region. The discocellular spots are always present, 

 as in the male. In the dry season the hind-wing and 

 apical area of the fore-wing in both sexes become over- 

 spread by a brownish irroration, with which the dark 

 markings become assimilated. The powdering is usually 

 more blurred and of a paler brown than in char in a; the 

 discocellular spots, as above noted, are present in both 

 sexes. The clasper in a male from Gazaland is small ; 

 its posterior spine (fig. 4) is blunt, not prolonged as in 



* Reise nach Mossambique, Taf. XXIII, figs. 5, C. 



