notes on Butterflies from the Victoria Nyanza. 221 
single specimen in the Wiggins collection, but it appears 
to be common in other collections from the same area. 
It is mimicked by :— 
A yellow hind-winged 2 form of Belenois zochalia, f. 
formosa, Butler, of which there are three specimens. Of 
the ordinary form of the there are 2, and 44 f f. 
Phrissura lasti, Grose-Smith (1). 
Phrissura phebe, Butler, (2), in which the resemblance 
is on the upper surface alone. 
II. Mylothris agathina (139), a very common species, is 
white with blackish marginal spots on the upperside, 
while beneath, the apex of fore wings and whole of hind 
wings are ochreous; furthermore the base of underside 
fore wing is largely, and that of hind wing slightly, diffused 
with orange-red. 
These characters on both surfaces are faithfully imitated 
by :-— 
Belenois thysa, Hopff. (14). 
Pinacopteryx rubrocostalis, Lanz. (14). 
Phrissura phebe (2), mimics M. agathina on the under 
surface only, thus entering Group II. as well as I. 
Ill. Mylothris yulit, Butler (25), and Mylothris poppea, 
Cram. (40), form a synaposematic pair, both being silvery- 
white with black marginal markings and both having the 
base of the fore-wing underside flushed with ochreous. 
They are closely mimicked by :— 
Phrissura sylvia, Faby. (17). 
Pinacopteryx dixeyi, Neave (12). 
The latter species is only represented in the collections 
from the Toro country on the eastern slopes of the 
Ruwenzori Mts., some distance west of the Lake. The other 
species occur both east and west of the Lake. 
The extremely abundant yellow and black Terias— 
T. brigitta, Cram. (89) 
T. desjardinsi, f. reqularis, Boisd. (45) 
T. senegalensis (70) 
are closely mimicked by the Lycenid, Zeriomima xantha, 
Grose-Smith (4). 
