False Batesian Mimicry 



both are arboreal and about the same size, and 

 this lemur's colouration is exceptional in its 

 family. 



The banded Duiker-buck of West Africa 

 (Cephalophus doriae\ has the same very unusual 

 colouration as the thylacine or marsupial wolf of 

 Tasmania, light brown, with bold black bands 

 across the hinder part of the back, and the 

 animals are about the same size. 



The dormouse of Europe closely resembles a 

 small American Opossum (Didelphys murina), 

 and a larger opossum (D. crassicaudata) is very 

 like the Siberian Mink (Mustela sibirica). 



The Flying Squirrel of North America (S#r0/- 

 terus volucella) is closely copied by the Flying 

 Phalanger (Petaurus breviceps) of Australia. 



It will be readily seen that in no one of these 

 cases can the likeness be of utility to either the 

 " model " or the " copy." 



FALSE BATESIAN MIMICRY AMONG BIRDS 

 There are many instances of this phenomenon 

 among birds. The New Zealand Cuckoo (Uro- 

 dynamis tritensis) shows a far closer resemblance 

 to the American Sparrow-hawk (Accipiter cooperi) 

 than to any New Zealand hawk, and in fact 

 closely mimics this quite alien bird. 



The stormy petrel, a purely oceanic bird, 

 closely resembles in size, colour, and style of 

 flight the Indian Swift (Cypselus affinis), a purely 



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