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XXVI. Pseudacraea boisduvali, Doubl., and its models, with 
especial reference to Bugalla Island. By G. D. 
Hate Carpenter, D.M., Oxon. 
[Read November 5th, 1913.] 
Pirates XXXVII anp XXXVIII. 
THIS paper owes very much to the kind help and advice of 
Prof. Poulton, who is, indeed, the author of its being, for 
it would never have been undertaken except for his sugges- 
tion, nor carried through without his aid and advice. 
The arrangement of the plates is entirely due to him. 
On Bugalla Island, in the Sesse Archipelago, Lake 
Victoria, during 1912 and January to February 1913, 
I was able to catch a good series of Pseudacraea boisduvalt, 
Doubl., viz. 8 § g and 12 99. It frequents the forest, 
but is most easily caught when it comes to the edge to 
feed from the flowers of the bush Haronga madagascariensis, 
Chois. (Hypericineae), which particularly flourishes where 
the belt of forest suddenly comes to an end and is replaced 
by open grass-land. The single large bushes when in 
flower are extraordinarily attractive to many kinds of 
insects, and I have seen Planemas, and the forms of Pseuda- 
craea eurytus, L., mimicking them, together with Pseuda- 
craea boisduvali and various synaposematic red and black 
Acraeas (A. egina, Cram., A. zetes, L., and A. perenna, 
D. and H.), all together at the same time, with numerous 
other insects of the Lycoid synaposeme. 
There is considerable difference of opinion as to the 
appearance of this fine Pseudacraea on the wing. Mr. 
G. A. K. Marshall wrote in 1897 (Trans. Ent. Soc., 1902, 
p. 504) as follows—“‘ I feel quite satisfied that Pseudacraea 
trimenit [boisduvala trimeni] is a mimetic and not a pro- 
tected species. In spite of its larger size it looks wonder- 
fully like Acraea acara on the wing, and the first few ex- 
amples I caught completely took me in. Their flight is 
like that of all Pseudacraeas and Euralias—slow and sailing 
—so long as they are not disturbed; but if struck at and 
TRANS. ENT. SOC. LOND. 1913.—PaART IV. (MAR. 1914) 
