THE PAL^ARCTIC AND NEARCTIC REGIONS 



241 



are not Ethiopian; while in the Ethiopian region 

 out of about 74 families only 10 are not Oriental. No 

 doubt these two regions are those which most resemble 

 each other, and they have been united by some naturalists, 

 but they are now generally admitted to be sufficiently 

 distinct to be classed as separate regions. Great weight 

 has, however, always been given to the possession of 

 peculiar families ; and for the same reason the fact that 

 nearly one-third of the families in the Palsearctic and 

 Nearctic regions respectively are not found in the other, 

 indicates a fundamental diversity that renders their union 

 into one region quite inadmissible. 



We will now tabulate the birds, in which the amount 

 of diversity is much larger as regards genera, and equally 

 as large as regards families : — 



LAND BIRDS OF THE PAL.EARCTIC AND NEARCTIC 

 REGIONS. 



PAL.EARCTIC. 



TuRDiD.E (Thrushes) : 



1. Monticola (4 sp.). 



2. Myiophoneus (1). 



3. Saxicola (20). 



4. Pratincola (7). 



5. Ruticilla (15). 

 0. Hodgsonius (1). 



7. Chimarrhornis (1). 



8. Cyanecula (2). 



9. Erithacus (4). 



10. Calliope (3). 



11. Cossypha (1). 



12. Nemura (1). 



13. Daulias (2). 



14. Sylvia (18), 



15. Melizophilus (2). 



16. Phylloscopas (19). 



17. Hypolais (8). 



18. iEdon (2). 



19. Acrocephahis (10). 



20. Lusciniola (10). 



21. Locustella (8). 



22. Cettia(4). 



23. Cisticola (1). 



24. Drymoeca (1). 



25. Scotocerca (2). 



26. Argya(3). 



27. Rhopophilus (3). 

 48. Babax(l). 



29. Peterorhinus (1). 



30, Trochalopterou (2). 



AccENTORiD.E (Hedge 

 sparrows) : 

 31. Accentor (11). 



BOTH. 



TuRDiD^ : 



1. Turdus (P. 21 sp. 

 N. 5 sp.). 



2. Sialia (1) (=Grandala 

 (3). 



3. Regulus (P. 21 sp. 

 N. 5sp.)(4-3). 



NEARCTIC. 



TURDID^ :f" 



1. Merula(2).' 



2. Hesperocichla (1) 



3. Polioptila (3). 



4. Myadestes (1). 



CiNCLiD.E (Dippers). 

 4. Cinclus(4.1). 



VOL. I. 



