DIC2UM. 627 
black slightly glossed with green; chin very pale yellow; throat and 
chest scarlet-vermilion; breast and abdomen white, washed with pale 
yellow and with a slaty black line down the middle; sides and flanks 
olivaceous; thighs black mixed with white; crissum saffron-yellow ; 
rectrices and wing-feathers black; wing-lining white. Iris brown; bill, 
legs, and nails black. Length, about 95; wing, 56; tail, 29; culmen 
from base, 10; bill from nostril, 6; tarsus, 12. 
“The female resembles the female of D. ignipectus, but the top of the 
head and back are very distinctly glossed with metallic green as in the 
male, though the gloss is much less pronounced. In some females of 
D. ignipectus the head is slightly glossed, but the back is always olive- 
green. Length, 86; wing, 46.5; tail, 28; tarsus, 12; culmen, 11.4.” 
( Grant.) 
Young.—Above mouse-gray washed with olive-green; under parts 
gray washed with dull olivaceous; abdomen, crissum, and middle of 
breast washed with light yellow. The first indication of the adult 
plumage consists of a few red feathers on the throat. 
The Luzon flowerpecker is abundant in the mountains of Benguet 
Province and appears not to occur in the lowlands. 
627..DICAZEUM APO Hartert. 
MOUNT APO FLOWERPECKER, 
Diceum apo Harrert, Bull. Brit. Orn. Club (1904), 14, 79; McGrecor and 
Worcester, Hand-List (1906), 96. 
Mindanao (Waterstradt). 
Diagnosis.—“Differs from D. luzoniense Grant in having the sides of 
the head glossy greenish black, instead of slaty, the vent and under 
tail-coverts brighter yellow, and the sides of abdomen darker olive-green.” 
(Hartert.) 
This species is known only from Mount Apo, Mindanao. 
628. DICAZEUM BONGA Hartert. 
SAMAR FLOWERPECKER, 
Diceum luzoniense GRANT, Ibis (1897), 238 (Samar). 
Diceum bonga Hartert, Bull. Brit. Orn. Club (1904), 14, 80; McGREcor 
and WorceEstTER, Hand-List (1906), 96. 
Samar (Whitehead). 
Diagnosis.—“Differs from D. luzoniense and D. apo in being smaller 
(wing only 47 mm. instead of 53 to 55 mm.). The sides of the head 
as dark or even darker than those of D. apo, while the upper surface 
seems to have a more steel-blue gloss.” (Hartert.) 
