PIIYLLOSCOPUS. 



425 



breed within the Palaearctic region ascend the Himalayas until they reach 

 an elevation where they can enjoy a Palearctic climate. The southern 

 winter range of the genus extends in Africa to the Cape of Good Hope, 

 and in Asia to Ceylon and the islands of the Malay archipelago ; but no 

 species has as yet been found in Australia. Six species breed in Europe, 

 and many more are accidental visitors on migration. Of these, three are 

 regular summer visitors to our islands, and a fourth has accidentally 

 visited our shores. 



