44 ANIMAL COLOKATION. 



examples were bred." These facts seem to indicate a marked 

 persistence of this form in the locality. 



In Ireland a dove-coloured variety of Pieris rapce, one 

 of the common white butterflies, is abundant, and has been 

 imported into America, where the variety is ,now the typical 

 form of the species- 

 Local races are of course not confined to reptiles and insects ; 

 there are plenty of instances among birds and mammals. 

 Dr. Gadow, in one of the British Museum Catalogues of Birds, 

 has recorded the interesting fact that specimens of Lanius 

 collaris from the Congo have a red under-surface ; south of 

 the Congo this colour is changed to orange, and in the 

 Cameroons to lemon-yellow. 



Geographical Distribution of Colour. 



Dr. L. Camerano has attempted a geographical distribution 

 of colour which may be thus briefly summarised.* The 

 Palajarctic region — that is, Europe and Northern Asia — has 

 as prevailing tints grey, white, yellow, and black ; in Africa 

 yellow and brown are most abundant ; green and red are 

 the prevailing tints of the Neotropical region (Central and 

 South America), yellow and red of the Indian. Australia is to 

 be distinguished from the rest by the great abundance of black 

 animals. 



A closer scrutiny of many of the above instances and 

 of others which seem to indicate some connection between 

 locality and colour, will probably show that other causes are 

 probably responsible for the colour changes. 



Additional Instances of an apparent Connection between Colour 

 and Locality. 



A curious instance of what appears to be an association 

 ' Zoologische Anzeiger, 1884, p. 341. 



