350 CHARADRITFORMES CHAP. V 
margins. 8S. sieboldi is peculiar to Japan, S. sororius and S. 
formosae to Formosa, S. permagnus to the Liu-Kiu Islands. 
Comparatively few fossil forms of the Columbidae have been 
discovered, but Columba occurs in the Lower Miocene of France 
and in Malta, while Lithophaps ulnaris and Progura gallinacea 
are recorded from the Queensland Drifts, and <Alectoroenas ? 
rodericana is an extinct species from Rodriguez. 
