GEOGRAPHICAL DISTRIBUTION. 



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We have endeavoured in the present work, by meaus of the Maps and Tables of 

 Geographical Distribution, to illustrate in a concise manner the range of the Swallows 

 at the present day. Should the results appear incomplete to any Ornithological 

 student, we can only recommend him to make a similar essay, and he will speedily find 

 how intricate and ho\v difficult of demonstration is this branch of Ornitholo<jicaI Science. 

 It will be impossible to obtain definite results until the habits and migrations of every 

 species are studied in every country by competent observers, and this is far from being 

 the case with the Swallows. 



Taking first the two principal divisions of the World, we obtain the following 

 results : — 



1. Chelidon. 



2. Biblis. 



3. Pheclina. 



Geneva peculiar to the Old Jf'orld (PahfogcEa). 



4. Cheramoeca. 

 o. Psalidoprocue. 



Genera peculiar to the Xciv World (Ncogira). 



1. Taclij'cincta. .3. .Uticora. 



2. Proijne. l. Stclgidoptcryx. 



Genera found in both Easlei-n (tad Wetilern JIciiiisplK'res. 



1. Cotilc. 



2. Hiruiulo. 



3. Pelroc'lielidon. 



Tlius the twelve genera of the llirundinlda' are accounted for 



