408 Philippine Journal of Science 1920 
Petrophila manillensis (J. R. Forster). Common from the lowlands to 
about 1,200 meters. 
Chaimarrornis bicolor Grant. A characteristic highland species at from 
1,200 to 1,800 meters; it is not known from the lowlands. 
Calliope calliope (Pallas). This beautiful species is found in the low- 
lands during the winter, and Whitehead says that it occurs up to the sum- 
mits of the highest mountains. 
Locustella lanceolata (Temminck). This is probably only a winter 
migrant; we collected a few specimens at about 1,200 meters in Benguet. 
Cisticola cisticola (Temminck). At about 1,200 meters in Benguet. 
Cisticola exilis (Vigors and Horsfield). This was found at about 1,200 
meters. Both species of Cisticola are commoner in the lowlands. 
Megalurus palustris Horsfield. At about 1,200 meters in Benguet. 
Megalurus tweeddalei McGregor. Whitehead records this species as 
occurring at 1,500 meters. The two species of Megalurus are much com- 
moner in the lowlands. 
Acanthopneuste borealis (Blasius). This is an abundant migrant 
throughout the lowlands and reaches at least the lower altitudes in the 
highlands. 
Tribura seebohmi (Grant). The unique specimen was taken by White- 
head at 1,800 meters in Lepanto. 
Horornis canturiens (Swinhoe). A winter visitor up to 1,500 meters. 
Horomis seebohmi (Grant). Fairly common in the highlands at from 
1,200 to 2,400 meters. 
Phyllergates philippinus Hartert. Occurs at from 1,200 to 1,800 meters. 
Artamus leucorynchus (Linnaeus). Very abundant in the lowlands and 
up to about 1,200 meters. 
Cephalophoneus validirostris (Grant). This species seems to occur only 
in the highlands at from 1,200 to 2,400 meters. 
Cephalophoneus nasutus (Scopoli). This species occurs in the lowlands 
and extends into the highlands up to about 1,800 meters. 
Hyloterpe albiventris Grant. This is the characteristic thickhead of 
the highlands up to about 2,400 meters’ altitude, but Whitehead records 
it as occurring at 150 meters in Abra; we found it at about the same 
altitude in northern Luzon. It is, however, the highland species of Hylo- 
terpe and is generally replaced by H. philippinensis in the lowland forests. 
Pardaliparus elegans (Lesson). Common in forests 'at all altitudes, 
from sea level to the forests on Mounts Pulog and Data. 
Callisitta mesoleuca (Grant). From 1,200 to 2,400 meters. At what 
altitude this species is replaced by the lowland species, C. cenochlamys, is 
not known. 
Zosterops meyeni Bonaparte. This species seems to be unrestricted by 
altitude for it is found in the lowlands and on Mount Data. 
Zosterops whiteheadi (Hartert). Described from Benguet specimens. 
Whitehead got Z. aureiloris Grant at 300 meters in Abra. The vertical 
range of the various silvereyes that have been credited to Luzon is doubtful. 
Possibly none of them is exclusively highland. 
Dicseum luzoniense Grant. Common at 1,200 meters in Benguet; found 
by Whitehead on the summit of Mount Data. It is probably a highland 
species. 
Prionochilus anthonyi McGregor. Known only from Polls Mountain. 
