648 Dr. G. D. Hale Carpenter on Pseudacraea boisduvali. 
30 caught by the Rev. K. St. A. Rogers at Rabai, 
near Mombasa, Br. E. Africa. 
1 caught by the Rev. H. Rowley, from “ the Zambesi.” 
2 caught by C. F. M. Swynnerton in 8.E. Rhodesia 
(Chirinda forest). 
6 caught by G. A. K. Marshall in Natal. 
1 caught by G. H. Burn in Natal. 
22 bred by the late A. D. Millar at Durban, Natal. 
These 62 males show that more than half of the Eastern 
examples have a well-developed orange-yellow subapical 
bar on the fore-wing (Plate XX XVII, fig. 11). This same 
peculiarity is well marked also in the model of the Eastern 
boisduvali (or boisduvali trimeni, Butl.), namely the acara, 
Hew., race of Acraea zetes, L. (fig. 10). In some males of 
trvment, on the other hand, this bar has almost or quite 
disappeared (as in 5 from Mombasa, 4 from Durban, and 
1 from 8.E. Rhodesia), or else is very faintly represented 
by that part of it near the hind-margin of the wing (as in 
9 from Mombasa and 6 from Durban). Subtracting these, 
we get 62 — 25 = 37, out of 62, with well-developed 
orange bar, so that this form is slightly predominant in 
the Hast and South-east ; and specimens with a less but 
still fairly well-developed orange area are very common. 
In the specimens from West Africa, of which, however, 
there are only 2 males and 1 female in the Hope Depart- 
ment, this orange area hardly appears; the Sierra Leone 
specimen shows no trace of it (Plate XXXVII, fig. 2), 
and an Angola specimen only that end of it close to the 
hind-margin of the wing. 
Now in the Uganda males (Plate XX XVIII, figs. 2, 6, 7), 
in no case is the orange bar so well developed as in the 
37 Eastern males, and in only half of them is it in the same 
condition as in the Angola specimen. Hence, as regards 
the non-development of the orange bar, the Uganda 
males approach most nearly to the Western form. The 
Western form, as was first pointed out by Haase (see 
pp. 651, 652), mimics Acraea egina and not Acraea zetes, 
and the Uganda males also mimic A. egina, although zetes 
abounds on Bugalla Island. 
There is another point of interest in the mimicry of the 
male Acraea zetes acara by Pseudacraea boisduvali triment 
(formerly Ps. trimeni, when the East African form was 
regarded asa distinct species). Many specimens of ¢ zetes 
