MIMICRY IN EAST AFRICAN BUTTERFLIES 81 
One day after questioning a group of fishers, I said: 4 Suppos- 
ing now you wished to tell your wives about this bird which you 
see every day, how would you describe it ? ’ Said they: ‘ Why 
should we tell our wives ? It is not eatable, and haven’t they 
eyes to see for themselves ? ’ After this I concluded that furthei 
inquiry was useless. 
In a following article I trust to be able to give some idea 
as to methods and apparatus for natural-history photography 
in the hope that some may be induced to take up this fascinating 
method of nature study, and produce valuable records of the 
fauna and even flora of the land we live in. 
MIMICRY IN EAST AFRICAN BUTTERFLIES 
WITH SPECIAL REFERENCE TO DANAINE MODELS. 
By the Rev. K. St. Aubyn Rogers 
The name Mimicry is used in a special sense in Entomology. 
It has been generally accepted as the term for certain interest- 
ing resemblances between different insects which cannot be 
accounted for on the grounds of affinity. Very shortly after the 
introduction of the natural system of classification by Linnaeus, 
it was found that very striking resemblances existed between 
butterflies especially belonging to genera by no means closely 
allied, and that in many cases these resemblances were confined 
to the female sex. These resemblances exist in most, if not 
all, classes of insects, and for many years received no adequate 
explanation. 
In 1859 Darwin’s 4 Origin of Species’ appeared, and one of 
the first results of the stimulus thus exerted upon all students 
of Natural History was a Paper by Bates in which these 
puzzling resemblances received a most ingenious explanation. 
Bates collected for many years on the Amazon where the 
cases of Mimicry are the most numerous and the most remark- 
able in the world. On his return home he began to study his 
collection in the light of the new theory of descent by modifica- 
tion under the influence of Natural Selection discovered by 
Darwin and Wallace. 
