506 



THE DIVING BIRDS — PYGOPODES. 



curved, or nearly straight, and inclining backward toward the occiput ; top of head with a broad 

 white stripe, originating on each side of the crest and extending back to and including the occi- 

 put ; loral, orbital, and malar re-gions, chin, and upper half of the throat, with orbital and auricular 

 rej^ions, uniform velvety plumbeous, with a truncated lower outline ; remaining lower parts con- 



imjmuwm^li^ 



Summer 2)lumage. 



tinuous white, except along the sides, which are sooty blackish. Upper parts, except as described, 

 plumbeous, the anterior lesser wing-coverts, remiges, and tail dusky. Bill yellowish, the culmen 

 black ; iris blackish ; legs and feet dusky yellowish (in the dried skin). Winter 'plumage : Simi- 

 lar to the above, but whole throat white, chin light plumbeous, crest and white stripes of the crown 

 absent, and the sides and flanks white, striped with slate-gray. Doicny yoiuKj : Above, brownish 



Winter plumage, 



gray, the whole back and rump indistinctly streaked with grayish white ; lower parts entirely 

 pure white, including chin and throat. Bill dusky, legs and feet pale brownish (in dried skin.^), 

 the wel)s dusky. 



Total length, about 10.50-11.00 inches; extent, 18.00-18.50; wing, 5.10-5.50; culmen, .70 ; 

 tarsus, 1.00 ; middle toe, .90-1.00. 



Temminck's Guillemot appears to have been first described, by the distinguished 

 ornithologist whose name it bears, from a Japanese specimen. It has since been 

 collected by Mr. W. Heine, in Commodore Perry's Exjiedition, at Siinoda, and also 

 in Yedo Bay. Dr. Cooper obtained specimens at I'ort Ganible, Washington Terri- 



