PUFFINUS. 85 
Subfamily PUFFININ 4. 
Genus PUFFINUS Brisson, 1760. 
Nasal tube obliquely truncate, its partition thick. 
75. PUFFINUS LEUCOMELAS Temminck. 
SIEBOLD’S SHEARWATER. 
Puffinus leucomelas TEMMINCK, Pl. Col. (1836), pl. 587; Ripa@way, Man. 
North Am. Bds. (1887), 62; Satvrin, Cat. Birds Brit. Mus. (1896), 
25, 370; SHARPE, Hand-List (1899), 1, 128; McGrecor and WORCESTER, 
Hand-List (1906), 19. 
Luzon (Cuming). Japan and Korea south to Australia. 
“Adult male.——Upper surface brown, feathers of body and wings with 
paler dusky edges; anterior portion of crown, forehead, sides of head, and 
neck white, each feather with a dark disk, which is narrow on the forehead 
and sides of the head and neck, giving a streaked appearance; entire 
under surface white; under wing-coverts white, interior ones with dark 
shafts, those near the edge of wing with dark disks; axillars pure white; 
tail brown, the inner webs of the lateral rectrices near the base white; 
primaries black throughout. Bill horn-color; feet flesh-color, the outer 
toe a little darker. Length, about 480; wing, 330; outer rectrices, 102; 
central rectrices, 142. 
“Female.—Similar to the male.” (Salvin.) 
“Lower parts white; top and sides of head white, spotted and streaked 
with blackish. Wing, 286 to 318; tail, 149 (graduated for about 46) ; 
culmen, 47; tarsus, 47; middle toe with claw, 33.” (Ridgway.) 
The only record of this species for the Philippine Islands is based on 
the specimen collected by Cuming. 
Order LARIFORMES. 
TERNS AND GULLS. 
Nostrils pervious, the opening linear or oval; wings long, strong, and 
pointed ; first primary longest; legs and feet moderate; hind toe small 
and elevated ; anterior toes fully webbed. Plumage of the adult simple in 
color, being white, black, and pearl-gray, rarely brown, usually in large 
areas. Young gray or mottled, very different in color from the adult. 
Usually found in flocks and never far from water. Eggs two to four, 
highly colored ; nests usually on the ground or on cliffs; young downy at 
birth and fed in the nest for some time.* 
* As the Bureau of Science collection contains very few specimens belonging 
to the order Lariformes and as these are winter specimens only, the greater 
part of the specific descriptions of Philippine gulls and terns are copied from 
Saunders’s excellent work, in volume 25 of the Catalogue of Birds in the British 
Museum. 
