422 
Mr. Cecil W. Barker^s 
Teracolus phlegyas, which is, I believe, exclusively a 
winter form. 
Teracolus speciosus affords examples of every gradation 
from the typical form down to T.johina, which is, I believe, 
undoubtedly the winter form of it. T.jobinais alone met 
with in the winter or dry season, though forms inter- 
mediate between it and T. speciosus are prevalent in the 
late autumn or between the seasons. 
T. regina typical is evidently the winter form of this 
butterfly, and the variety A of Trimen (since meta- 
morphosed into T. anax, H. G. Smith) is the summer 
form of it. My personal knowledge of this butterfly is 
limited to the capture of a small 6 in the Umvelosi 
Valley, Zululand, in July, 1893, and of a ? up the 
Pungwe River in September, 1894. Both these 
are of the dry season or typical form. I have also 
examples of the variety A = T. anax, and of the typical 
form from Mashonaland sent to me on different occasions. 
I have every reason to believe that Teracolus wallen- 
grenii is the dry season form of T. annas. T. anude is 
plentiful about Sydenham, near Durban, and Mr. A. 
Millar has collected long series of this butterfly through- 
out the year. His examples graduate from the heavily- 
marked typical T. annse to the intermediate form variety 
A of Trimen, and thence to the true T. wallengrenii. 
Teracolus wallengrenii he has alone taken in the winter 
months, and then sparingly. In Zululand, in the valleys 
of the Black and the White Umvelosi Rivers, I have 
captured T. wallengrenii numerously on two different 
occasions, i.e., in August of 1889, and in July, 1893. 
Teracolus annse is alone caught in the summer months, 
though the variety A occurs somewhat rarely in the 
autumn. 
The same reasoning points to T. topha being merely 
the seasonal variety of T. auxo. In Natal and Zulu- 
land T. auxo only occurs in the summer, and T. topha 
in the winter, though intermediate forms are occasion- 
ally met with about the change of the seasons. In July, 
1889, I took T. topha numerously at different points all 
along the road from the Umgani River to the Tugela 
River, and going over the same ground, in December, 
1890, I took T. auxo just as numerously at the same 
places. Again, in my next trip, about the end of June, 
1893, T. topha was alone in evidence, and as numerous 
