o6 MIMICRY, AXD OTHER PROTECTIVE 



bands or stripes. One of these, Danais niavius, is 

 exactly imitated both by Papilio hippocoon and by 

 Diadema anthedon ; another, Danais echeria, by Pa- 

 pilio cenea ; and in Natal a variety of the Danais is 

 found having a white spot at the tip of wings, accom- 

 panied by a variety of the Papilio bearing a corre- 

 sponding white spot. Acrsea gea is copied in its very 

 peculiar style of colouration by the female of Papilio 

 cynorta, by Panopaaa hirce, and by the female of Elym- 

 nias phegea. Acrsea euryta of Calabar has a female 

 variety of Panopea hirce from the same place which 

 exactly copies it ; and Mr. Trimen, in his paper on 

 Mimetic Analogies among African Butterflies, published 

 in the Transactions of the Linnsean Society for 1868, 

 gives a list of no less than sixteen species and varieties 

 of Diadema and its allies, and ten of Papilio, which in 

 their colour and markings are perfect mimics of species 

 or varieties of Danais or Acrsea which inhabit the same 

 districts. 



Passing on to India, we have Danais tytia, a butter- 

 fly with semi-transparent bluish wings and a border of 

 rich reddish brown. This remarkable style of colour- 

 ing is exactly reproduced in Papilio agestor and in 

 Diadema nama, and all three insects not unfrequently 

 come together in collections made at Darjeeling. In 

 the Philippine Islands the large and curious Idea 

 leuconoe with its semi-transparent white wings, veined 

 and spotted with black, is copied by the rare Papilio 

 idasoides from the same islands. 



In the Malay archipelago the very common and 



