Iole guimarasensis Steere, List Birds & Mams. Steere Exped. (1890),
19; Grant, Ibis (1896), 546; Whitehead, Ibis (1899), 215; McGregor,
Pub. Govt. Labs. (1905), 25, 32; McGregor and Worcester, Hand-List
(1906), 79.
Iole philippinensis Bourns and Worcester, Minnesota
Acad. Nat. Sci. Occ. Papers (1894), 1, 60 (part).
Iole philippensis Sharpe, Hand-List (1901), 3, 313 (part).
Pá-la-go, Ticao, used for Pycnonotus also.
Bantayan (McGregor); Guimaras (Meyer, Steere Exp.); Masbate
(Bourns & Worcester, McGregor); Negros (Steere, Everett, Steere
Exp., Bourns & Worcester, Whitehead, Keay); Panay (Steere Exp.,
Bourns & Worcester); Ticao (McGregor); Verde (McGregor).
Adult.--Very similar to Iole gularis from which it differs only in
being slightly larger and in having the throat and breast paler. Ten
males from Masbate and Ticao yield the following extreme and average
measurements: Wing, 102 to 111 (107); tail, 86 to 94 (90); exposed
culmen, 22 to 25 (23); bill from nostril, 15 to 18 (17); tarsus,
19.5 to 23 (21). Nine females from the same localities measure: Wing,
98 to 106 (99); tail, 87 to 99 (88); exposed culmen, 20.5 to 25 (21);
bill from nostril, 15 to 17 (16); tarsus, 18 to 22 (20).
"Doctor Steere separates the Iole from Panay, Guimaras, and
Negros from the Luzon, Samar, Bohol, Cebu, Leyte, and Mindanao
birds. He states that I. guimarasensis has the 'size and general
coloring of I. rufigularis, with the light shaft-streaks of
I. philippinensis.' The latter differences would not seem to be of
special value in differentiating it from I. philippinensis and we can
find nothing in the size or color of our large series of specimens
from the central Philippines to warrant us in separating them from
typical I. philippinensis [=gularis].
"Steere mentions the very different note of the Cebu birds. We were
unable to perceive the slightest difference in the notes of the birds
in question and incline to the opinion that the Doctor must have heard
the note of I. monticola when he crossed over into Cebu." (Bourns
and Worcester.)