PHCEBETRIA. 53 



but with a transverse bar of yellow (orange in life) across the base ; 

 culmen orange-yellow in life ; wing about 19.00, tail 7.00, culmen 4.50, 

 depth of bill at base 1.50, tarsus 2.75, middle toe (with claw) 4.25. Hob. 

 Indian, Antarctic, and South Pacific Oceans. 



T. chlororhynchus (GMEL.). Green-billed Albatross. 1 



2 . Culmen 4.75 or more ; wing 22.00 ; bill light-colored (pale grayish, with pale 

 yellowish culmen and nails in life), with black line across base of upper man- 

 dible and yellow bar at base of lower. (" Clouded with dark gray" in 

 young.) Culmen 4.75-4.90, depth of bill at base 1.90-2.00, tail 10.00, tarsus 

 3.25, middle toe (with claw) 5.00. Hob. South coast of Van Diernen's Land. 



T. cautus (GOULD). Cautious Albatross. 1 



GENUS PHGEBETRIA EEICHENBACH. (Page 50, pi. XIV., fig. 2.) 



Species. 



Adult (?) : Neck, back, and lower parts pale smoky gray ; sides of head, chin, 

 and throat deep sooty, nearly black around eyes; eyelids whitish ; wings and tail 

 dark sooty slate, the shafts of primaries and tail-feathers yellowish toward base ; 

 bill deep black, the grooves whitish ; feet pale reddish or yellowish. Young (?) : 

 Entire head deep sooty blackish, fading gradually into deep smoky gray on lower 

 parts, back, rump, and upper tail-coverts ; wings and tail sooty slate, the shafts of 

 the quills and tail-feathers yellowish white ; eyelids conspicuously white, except 

 anteriorly ; bill and feet as in supposed adult. Length 34.00-37.00, extent 78.00- 

 84.00, wing 20.00-21.50, tail 10.50-13.00, the outer feathers 3.00-5.50 shorter. 

 Egg 3.96 X 2.63, white, minutely sprinkled with brown on larger end. Hab. South 

 Pacific, north (casually ?) to coast of Oregon. 



84. P. fuliginosa (GMEL.). Sooty Albatross. 



FAMILY PROCELLARIID^E. THE PETRELS. (Page 50.) 



Nest a hole among rocks (usually on face of cliffs). Egg single, white (unless 

 adventitiously stained). 



Genera. 



a 1 . Secondaries 13, or more. (Subfamily Procellariince.') 



b l . Size very large (wing 17.00 or more) ,* tail-feathers 16 ; bill longer than 



tarsus Ossifraga. (Page 57.) 



6 2 . Size medium or small (wing 15.00 or less) ; tail-feathers 12-14 ; bill shorter 



than tarsus. 

 c 1 . Wing more than 7.00. 



d l . Culmen more than half as long as middle toe, with claw. 



e l . Inner side of edge of upper mandible without distinct fringe- 

 like processes. 



1 Diomedea cklororhyncha GMEL., S. N. i. 1788, 568. 



2 Diomedea cauta GOULD, P. Z. S. viiL I840 r 177 ; B. Austr. pi. 40. 



