52 NORTH AMERICAN BIRDS. 



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

 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. Hab. 

 (Unknown.) 



D. gilliana COTJES. 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. Hab. Pacific coast 

 of South America (Callao Bay, Peru). 



D. irrorata SALVIN. Speckled Albatross. 3 



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. 



ft 1 . 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. Hab. Southern 

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



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



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

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



* Diomedea melanophry* " BOIE," TEMM. PI. Col. No. 456 (1838). GOULD, B. Austr. pi. 43. B. B. A R. 

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



2 Diomedea gilliana CouES, Proc. Ac. Nat. Sci. Phil. May, 1866, 181. Type in mus. Philadelphia Academy 

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



Diomedea irrorata SALVIN, P. Z. S. 1883, 430. 



