362 



PYGOPODES. 



the Arctic Regions, and three of which visit Japan in winter. The 

 Podicipida number between twenty and thirty species, which are 



Femur and front part of libia. 



distributed over the rest of the world, including Madagascar, Aus- 

 tralia, and New Zealand, but not the Pacific Islands. Five of the 

 Podicipidse breed in Japan. 



368. COLYMBUS ADAMSI. 

 (WHITE-BILLED DIVER.) 



Colymbus adamsii, Gray, Proc. Zool. Soc. 1859, p. 167. 



This species may always be recognized by its bill, which is nearly 

 white, not decurved, and very large (height at nostrils 1^ to 1 inch, 

 instead of, as in C. glacialis, from 1 to | inch) . 



Figures : Elliot's Birds of North America, pi. 63. 



There can scarcely be any doubt that the Great Northern Divers 



