Dicæum luzoniense Grant, Ibis (1897), 238 (Samar).
Dicæum bonga Hartert, Bull. Brit. Orn. Club (1904), 14, 80;
McGregor and Worcester, 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.)