XIV 



eastern boundary the Ural range and river down to Orenburg, whence I draw an imaginary 

 line to the south-east so as to include the Sea of Aral, Bokhara, Afghanistan, and the whole 

 of the Persian tableland, and thence westward skirting the Arabian Desert to the northern 

 portion of the Ilea Sea, but, as before, excluding the valley of the Jordan. The southern 

 boundary, however, is the same as I then adopted. As will be seen from the above, I now 

 include the whole of the Persian Province in the Western Palsearctic Area, whereas in the 

 ' Birds of Europe ' I cut it in two, including only the western portion. 



