THE ANNALS 
AND 
MAGAZINE OF NATURAL HISTORY. 
[FIFTH SERIES.] 
No. 60. DECEMBER 1882. 
XLIV.—Mimicry between Butterflies of Protected Genera. 
By RAPHAEL MELDOLA. 
In 1879 the late Charles Darwin called my attention to a 
paper by Dr. Fritz Miller, in ‘ Kosmos’*, in which this natu- 
ralist attempted to explain the outstanding cases of mimicry, 
viz. those cases in which both the genera concerned are pro- 
tected by distastefulness, by an extended application of the 
principle of natural selection, thus bringing the whole of these 
interesting phenomena under the action of Darwinian factors. 
Iwas at the time so much struck by the ingenuity of the 
reasoning employed, that I published a translation of the 
paper in the ‘ Proceedings of the Entomological Society of 
London’ (1879, p. xx). ‘The same author has recently pub- 
lished a second paper on this subject, an account of which has 
already been given in ‘ Nature’} by Mr. A. R. Wallace, 
who not only states Fritz Miiller’s case with his usual force 
and clearness, but gives the additional weight of his own 
authority to the proposed extension of the meaning of the 
term “mimicry.” It is not necessary here to recapitulate 
Fritz Miller’s arguments; I need only remind entomologists 
that he shows how it is advantageous for one species to 
* “ Tiuna and Thyridia; a remarkable case of Mimicry in Butterflies,” 
‘Kosmos,’ May 1879, p. 100. 
+ “Remarkable Cases of acquired Resemblance among Butterflies,” 
‘Kosmos,’ 1881; ‘ Nature,’ vol. xxvi. p. 86. 
Ann. & Mag. N. Hist. Ser. 5. Vol. x. 28 
