(Pts) 
form and the ordinary female of J. chloris there was only 
a slight interval. It was true that his present material did 
not enable him to bridge over the gap; but in view of the 
near approach to the typical J. chloris exhibited by these 
intermediate females, and of the complete transition which he 
had shown to exist in the case of the males, he thought it 
could hardly be doubted that further investigation would 
supply the very few steps still lacking. A transitional female 
from Wadelai, of the kind he had described, had been named 
clarissa by Butler. 
The greater number of the 31 specimens now shown were 
collected by Mr. Wiggins on the north-east and north-west 
shore of the Victoria Nyanza ; two of his males were from 
Toro in Western Uganda, and one interesting female specimen, 
showing an early stage of departure from M. agathina in the 
direction of J. chloris, was captured at Mombasa. The fact 
that the forms referred to occurred together was established 
by a remarkable series of six specimens all taken on the same 
day by Mrs. Leaky near Mengo, on the north-west shore of 
Victoria Lake. This series consisted of a typical male and 
female M. chloris, and a nearly typical male IZ. agathina; 
together with a transitional male and two transitional females, 
the latter closely resembling the type of Butler’s J/. clarissa. 
Mr. Neave had shown, from Uganda specimens also 
collected by Mr. Wiggins, that a similar transition occurred 
in that region between the western Amauris niavius, Linn., 
and the eastern and southern A. dominicanus, Trim. (Proc. 
Ent. Soc. Lond., 1903, p. xciv ; Trans. Ent. Soc. Lond., 1906, 
pe 2Eh): 
lxv 
Wednesday, November 6th, 1907. 
New Species oF Prnacopreryx.—Dr. F. A. Dixry exhibited 
d and specimens of a Pinacopteryx, at present undescribed, 
which had been discovered by Mr. 8. A. Neave in North-East 
Rhodesia. 
He remarked that the interesting genus Pinacopteryx, which 
was purely African in distribution, formed a very natural 
group amongst Pierine genera, somewhat isolated in affinity, 
