HEMIPROCNE. 515) | 
Bourns & Worcester, Keay, Whitehead) ; Panay (Steere Exp., Bourns & Worces- 
ter) ; Samar (Bourns & Worcester) ; Sibutu (Everett) ; Sulu (@uwillemard, Bourns 
dé Worcester) ; Tablas (Bourns € Worcester) ; Tawi Tawi (Bouwrns € Worcester). 
Adult male.—Lores deep black; ear-coverts chestnut; a broad white 
stripe from base of culmen, continued over eye and running out. in 
elongated feathers to nape; a similar white line under ear-coverts, con- 
tinued from the large white chin-patch; remainder of head and throat 
dark metallic blue; back, rump, upper tail-coverts, breast, and sides of 
body bronze-brown; middle of abdomen and under tail-coverts white; 
wings and tail dark metallic blue; innermost secondaries white. Iris 
dark brown; bill and legs black. A male from Mariveles, Luzon, meas- 
ures: Wing, 140; tail, 80; tarsus, 6. 
Adult female.—Like the male but ear-coverts metallic blue instead of 
chestnut. A female from Irisan, Benguet, Luzon, measures: Wing, 140; 
tail, 81; tarsus, 6. 
“Curiously local in its habits. Perches in the same place day after 
day, taking short flights from time to time in pursuit of insects. The 
ground under its favorite perch is usually covered with excrement. Five 
males average, 148 in length; wing, 129; tail, 73; culmen, 6; tarsus, 7; 
middle toe with claw, 12. Two females are somewhat larger, measuring 
160 m length; wing, 136; tail, 81; culmen, 6; tarsus, 7; middle toe 
with claw, 13.” (Bourns and Worcester MS.) 
Family MICROPODIDZ. 
Wing long, pointed, and when closed extending far beyond the end 
of tail; bill small and weak but gape very wide; legs and feet very 
small and weak; plumage mostly black or dark brown, slightly glossy, 
often with patches or mottlings of white; small birds capable of long 
continued flight; nests usually placed in caves or fastened to cliffs or 
houses; eggs two, white and unspotted. Certain species of the genus 
Collocalia vel Salangana make the edible nests of commerce and nest in 
great colonies. Birds of this family are wide ranging and one or more 
species may be expected to occur in any island of the Philippine group. 
Of the genera, Tachornis may be recognized by its deeply forked tail ; 
Chetura by its sharp, stiff tail-feathers ; Collocalia by its square, or nearly 
square, tail without spines; Micropus by its white throat and tail without 
spines. 
Subfamilies. 
a. Tarsi unfeathered or with a few feathers only; tail square or but slightly 
forked; toes arranged normally, three in front one behind. 
Cheturine (p. 352) 
a. Tarsi distinctly feathered; tail decidedly or even deeply forked; all the toes 
CEG 20 BTN) 96510 Ce ne oh nn Seer ere Micropodine (p. 360) 
