INTEODUCTIOlf. 



13 



All the domestic varieties seem to have been derived from the 

 Eock-pigeon {Colvmba livia), which is a native of South-eastern 

 Europe. 



Kg. 9. 



The Eock-pigeon {Cohtmha livia). 

 Fig. 10. 



The Tooth-billed Pigeon {Didunculm strigiroBtns). 



