African S'pecies of the Genus Acraea. 155 



primaries. The grouud-colour is also constantly yellower 

 than in A. acrita. 



9 . Expanse 50-58 mm. Dry season. Ground-colour but 

 little duller than that of ^ . Abdomen black above with white 

 lateral spots. Wing spots often very small, and faint on upper- 

 side, otherwise spots and markings as in ^ . 



Wet season. Ground-colour tending to dusky ochreous. 



Tliere would seem to be much less seasonal dimorphism 

 in A. chaerihula, than in acrifa. 



Professor Aurivillius when compiling his catalogue of 

 African Rhopalocera regarded the species as a form of 

 acrita. Neave, however, pointed out (/. c.) that it was 

 quite a distinct species, a fact which he established on his 

 experience of the insect in life, ;uid also from an examina- 

 tion of the male armature. In spite of this, however, Strand 

 includes it in his list of forms of acrita, merely remarking 

 in a footnote that according to Neave chaeribula is a good 

 species. 



55. Acraea lualabae. PI. IX, f. 16. 



Acraea lualabae, Neave, Proc. Zool. Soc, p. 18, pi. 1, f. 4 

 (1910). 

 Congo (Lualaba R.). 



(J . Expanse about 50 mm. Wings rather dull orange some- 

 what paler on f.-w. median area : f.-w. with a very slight black 

 suffusion at base and a conspicuous black tip about 7 mm. wide. 

 A black spot in cell very slightly beyond origin of 2, and one 

 •on upper part of end of cell. Two discal spots beyond cell, one 

 in 5 and a larger one in 3. In 2 a large spot touching the 

 median, and in lb a submarginal and a subbasal spot. 



H.-w. dull orange with a black basal suffusion, and a marginal 

 border formed of l)lack arches on a narrow marginal line. Spots 

 as on underside but smaller. In the cotype at Oxford there is 

 a spot in area 5 on upperside, which is reduced to a minute dot 

 on underside. The type has no spot in this area. 



Underside. F.-w. as on upperside but paler, the apical black 

 replaced by dark ochreous. A black spot at base of costa. 

 H.-w. pale orange ochreous, lemon ochreous at base of cell to 

 inner margin, reddish at base of area 7, and in median portion 

 •of Ic, lb and la. Marginal border with black arches enclosing 

 rounded spots of pale dull ochreous. Black spots as follows : — 

 A median spot in 7, a spot in 6 much nearer margin, under this 

 a minute dot in 5 representing the spot on upperside which is 



