62 NORTH AMERICAN BIRDS. 
Ff’. 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 SrreztTs. Christmas Island Shearwater.! 
e*. 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 
(Tremm.). Slender-billed Shearwater. 
@., Bill light-colored (pinkish or fleshy white in life), the nails black- 
ish. Hab. Off western coast of Australia. 
P. carneipes GouLD. Flesh-footed Shearwater.? 
&. Tail nearly or quite half as long as the wing, graduated for about as much 
as the length of the tarsus. (Subgenus Theillus GiocEr.*) 
c. Lower parts uniform sooty grayish. 
d', 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.‘ 
@. 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 Lzss, Green-billed Shearwater.5 
é. 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), eulmen 
1.85, tarsus 1.85, middle toe, with claw, 1.30. Hab. Japanese seas. 
P. leucomelas (TeMM.), Streaked Shearwater.® 
1 Puffinus (Nectria) nativitatis Streets, Bull. U. 8. Nat. Mus. No. 7, 1877, 29. 
2 Puffinues carneipes Gouxn, P. Z. 8. 1844, 57, 
8 Theillus GoG., “v. Fror. Notiz. 1827, xvi. 279.” Type, Pufinus chlororhynchue Less. (?). 
4 Pufinus sphenurue Goutp, Ann. Mag. N. H. Ist ser. xiii. 1844, 365 3 B. Austr. vii. pl. 58. 
5 Pufinus chlororhynchus Luss., Traité, 1831, 613. 
wy Algal leucomelas Tems., Pl. Col. livr. 99, pl. 587 (1838). Pufinus leucomelas Bonap., Consp. ii. 
1856, 203. 
