52 NORTH AMERICAN BIRDS. 



culmen 4.50-4.60, tarsus 3.05-3.38, middle toe 3.90-4.32. Sab. 

 Southern seas, especially South Pacific, casual off coast of Cali- 

 fornia — . D. melanophrys Boie. Spectacled Albatross. 1 



d?. Under wing-coverts uniform dark slaty or grayish brown. Similar 

 in plumage to D. melanophrys, except under wing-coverts, which 

 are uniform dusky instead of partly white ; bill olive-brownish, 

 the nails dusky ; wing 20.00, tail 9.00, culmen 5.00, depth of 

 bill at base 1.75, tarsus 3.00, middle toe (with claw) 4.75. Sab. 

 (Unknown.) 



D. gilliana Coues. Gill's Albatross. 2 



c 2 . Lower parts partly grayish brown ; upper parts varied with dusky and 



white. 



Adult (?): Head and neck white, washed with yellow; belly 



grayish brown, freckled with white ; upper back and rump 



transversely varied with dusky and white. Sab. Pacific coast 



of South America (Callao Bay, Peru). 



D. irrorata Salvin. Speckled Albatross. 8 



Genus THALASSOGERON Eidgway. (Page 50, pi. XIV., fig. 1.) 



Species. 



Common Characters. — Adult: Upper parts chiefly uniform dark brownish 

 slate, more plumbeous on back, especially anteriorly ; rump and upper tail-coverts 

 white ; tail grayish, the feathers with yellowish white shafts ; lower parts white ; 

 head and neck sometimes white shaded with plumbeous on top of former and 

 hinder part of latter, sometimes entirely light ash-gray, always with a darker space 

 immediately in front of and behind eye, with a white spot on lower eyelid. 



a 1 . Culmen 4.50 or less ; wing 21.00, or less ; bill blackish, with yellowish culmen. 



b\ Culmen continuing broad and flat to the extreme base, which is broad and 

 slightly rounded ; tarsus more than 3.00 ; lower mandible with a yellow- 

 ish stripe along lower edge, from base nearly to the nail ; culmen pale 

 yellowish or greenish ; length about 35.00-37.00, wing 17.75-21.00, tail 

 8.00-9.00, culmen 4.35-4.50, depth of bill at base 1.70-1.75, tarsus 3.25, 

 middle toe (without claw) 4.30-4.35. Egg 4.18 X 2.63. Sab. Southern 

 oceans (except South Atlantic ?), north, casually, to coast of Oregon. 



83. T. culminatus (Gould). Yellow-nosed Albatross. 



b 2 . Culmen much compressed, narrowing to an acute angle at extreme base ; 

 tarsus less than 3.00 ; lower mandible without yellow along lower edge, 



i Diomedea melanophrys " Bora," Temm. PI. Col. No. 456 (1838). Gould, B. Austr. pi. 43. B. B. & R. 

 Water B. N. Am. ii. 1884, 357. 



« Diomedea gilliana Coues, Proo. Ac. Nat. Soi. Phil. May, 1866, 181. Type in mus. Philadelphia Academy 

 Natural ScienceB. (Possibly young of D. melanophrys.) 



' Diomedea irrorata Salvin, P. Z. S. 1883, 430. 



