OS 
The two primary Planema models of Combination I. 
It is noteworthy that, in addition to the differences in form and 
direction of the bar crossing the fore wing in the two species, the 
fulvoustintis of a deeper shade in the male macarista than in poggei 
nelsoni. It can scarcely be doubted that there has been synaposem- 
atic approach between the two models; but their relationship over 
a much wider range must be studied before a confident decision can 
be reached. In the forests near Entebbe the male Pl. macarista is 
seen to predominate greatly over the other model, 81 specimens 
being shown in Table I, as against 12, including a single female, of 
PI. poggei nelsoni. These proportions are sure to be different, and 
may even be reversed, in other parts of the common range of the 
two species. The strongest evidence will however be supplied if it 
can be shown that one of these models exists in a modified form 
outside the range of the second, and that the likeness to the other 
increases when it enters its area It is slightly more probable that 
Planema poggei nelsoni, with both sexes alike, has influenced 
rather than been influenced by the male P/. macarista. 
The striking and peculiar colour-scheme is borne by both sexes of 
poggei nelsoni, while the female.of macarista possesses an appear- 
ance common to several female Planemas _ 
It is possible that, on its under surface, the male Planema alcinoe 
FELD. is an incipient mimic of the two primary models. A careful 
comparison between alcinoe of Entebbe and of the parts of the 
west coast, where Pl. poggel and macarista are unknown, will 
probably settle the question. In the meantime the male alcinoe is 
placed beside its female, which is a model in Table II. 
Acrea alciope HEW. : the aurivillii STAUD. temale form. 
The resemblance of this female Acr@a to the male ot Planema 
macarista is equally remarkable on both surfaces, the basal area 
of the hind wing under side exhibiting the characteristic Planemoid 
brown triangle, over which are scattered black spots corresponding 
to those of the male a/ciope, but larger in size. Certain points in the 
mimetic association deserve fuller consideration. 
