i 4908 
Pseudacrea hobleyi NEAVE, and its forms. 
This very interesting series of mimetic forms, on a superficial 
examination, seems to be opposed to Dr. KARL JORDAN's conclu- 
sions on the polymorphism of certain mimetic Pseudacræas, publish- 
ed in the present volume, but, subjected to a more searching 
enquiry, it tends to support them. It is certainly difficult to believe 
that a sexually dimorphic form suchas Pseudacrwa hobleyi — its 
males mimicking two Planemas with a fulvous bar crossing the 
fore wing, its females mimicking two Planemas with a white bar 
in a similar position — can belong to the same species as Ps. terra 
NEAVE, in which both sexes mimic the fulvous and black Planema 
tellus platyxantha with a pattern entirely different from the models 
of hobleyi. These latter models, male as well as female, possess the 
well-known, black-spotted, brown triangle at the base of the hind 
wing under surface, and so do the two sexes of Ps. hobleyi. 
Planema tellus, on the contrary, has the black spots without the 
triangle, and so has Ps. terra. 
In spite of these difficulties, the fine series of Pseudacræas pro- 
vided by the generosity of Dr. C. A. WIGGINS has enabled me to 
produce evidence in support of the remarkable and unexpected 
conclusion at which Dr. JORDAN has arrived. 
In the first place, the investigation of a long series of specimens 
shews that the sexual dimorphism ot Ps. hobleyi is not complete. A 
female (1) example captured July 18th (Table I) possesses the colour 
and to a large extent the pattern of the male. It is a mimic of the 
male and not the female of Planema macarista. And this is not an 
isolated example, for I have since met with others. The whole of 
the material presented by Dr. WIGGINS will enable me to estimate 
with a fair degree of accuracy the proportion in which such excep- 
tions occur at Entebbe. | 
(1) I owe the recognition of the sex of this specimen to my friend Mr. HARRY 
ELTRINGHAM, to whom it had been submitted by my assistant Mr. A. H. Hamm. 
The shape of the wings is characteristically female, and the form of the anterior 
or costal section of the V-shaped fulvous bar crossing the fore wing resembles 
the female pattern rather than the male. 
