62 NORTH AMERICAN BIRDS. 



/ 2 . Wing less than 10.00; bill deep black; under wing-coverts 

 uniform deep sooty black. 



Uniform sooty black, the lower parts much darker 

 and browner than in stricklandi and griseus ; wing 

 9.80, tail 3.50, culmen 1.25, tarsus 1.70, middle toe, 

 with claw, 1.98. Hab. Pacific Ocean (Christmas 

 Island). 



P. nativitatis STREETS. Christmas Island Shearwater. 1 

 e 2 . Culmen less than the combined length of the first two divisions 

 of the outer toe. 



Above dark sooty slate, beneath deep sooty gray, paler 

 on throat, where sometimes inclining to whitish ; wing 

 10.00-11.10, tail 3.20-3.60, culmen 1.20-1.28, depth of 

 bill at base .35-.50, tarsus 1.90-2.00, middle toe, with 

 claw, 2.18-2.42. Hab. Pacific Ocean, from Alaska and 



Kamtschatka to Australia 96. P. tenuirostris 



(TEMM.). Slender-billed Shearwater. 



cP. Bill light-colored (pinkish or fleshy white in life), the nails black- 

 ish. Sab. Off western coast of Australia. 



P. carneipes GOULD. Flesh-footed Shearwater. 2 

 6 2 . Tail nearly or quite half as long as the wing, graduated for about as much 



as the length of the tarsus. (Subgenus Theillus GLOGER. S ) 

 c 1 . Lower parts uniform sooty grayish. 



d l . Bill dusky or brownish, with flesh-colored or reddish tinge in life ; 

 wing 10.50-11.25, tail 5.00-6.00 (graduated for about 2.00), cul- 

 men 1.60, tarsus 1.90, middle toe, with claw, 2.35. Hab. Aus- 

 tralian seas P. sphenurus GOULD. Wedge-tailed Shearwater.* 



(P. Bill " greenish orange," with black tip and culmen ; rather larger 

 than P. sphenurus. Hab. Indian Ocean, from western Australia 

 to Cape of Good Hope. 



P. chlororhynchus LESS. Green-billed Shearwater. 5 

 c 2 . Lower parts white. 



Top and sides of head white, spotted and streaked with blackish ; 



wing 11.25-12.50, tail 5.85 (graduated for about 1.80), culmen 



1.85, tarsus 1.85, middle toe, with claw, 1.30. Hab. Japanese seas. 



P. leucomelas (TEMM.). Streaked Shearwater. 6 



1 Puffinus (Nectris) nativitatis STREETS, Bull. TJ. S. Nat. Mus. No. 7, 1877, 29. 



2 Puffinus carneipes GOULD, P. Z. S. 1844, 57. 



3 Theillus GLOG., " v. Fror. Notiz. 1827, xvi. 279." Type, Pufflnus chlororhynchus LESS. (?). 



4 Puffinus sphenurus GOULD, Ann. Mag. N. H. 1st ser. xiii. 1844, 365 ; B. Austr. vii. pi. 58. 



5 Puffinus chlororhynchus LESS., Trait6, 1831, 613. 



6 Procellaria leucomelas TEMM., PI. Col. livr. 99, pi. 587 (1838). Puffinus leucomelas BONAP., Consp. ii. 

 1856, 203. 



