354 MANUAL OF PHILIPPINE BIRDS. 
hair-brown, the throat not paler; sides of head and neck darker brown 
than the under parts; a blackish - in front of the eye; lining of wing 
blackish brown. 
“In its large size, deeply emarginate tail, and lack of tarsal feathering 
Collocalia origenis agrees with Collocaha whiteheadi, but is readily dis- 
tinguishable by the dark colors, particularly on the upper parts which are 
even more blackish than in Collocalia fuciphaga from the Philippines.” 
Oberholser gives measurements of two males as follows: Wing, 129, 
138; tail, 53, 60; exposed culmen, 6, 5.5; tarsus, 13, 14. Two females: 
Wing, 134, 130; tail, 51, 54; exposed culmen, 5.5; tarsus, 12.5, 14. 
“This new species was discovered by Doctor Mearns during his recent 
trip to the Island of Mindanao, the four adults obtained having been 
brought by natives who had found them in a cave on Mount Apo.” 
(Oberholser.) 
315. COLLOCALIA FUCIPHAGA (Thunberg). 
THUNBERG’S SWIFTLET. 
Hirundo fuciphaga THUNBERG, K. Vet. Acad. Nya Handl., (1812), 33, 153, 
pl. 4. 
Collocalia fuciphaga Hartert, Cat. Birds Brit. Mus. (1892), 16, 498; 
SHARPE, Hand-List (1900), 2, 89; OaTEs and RED, Cat. Birds’ Eggs 
(1903), 3, 75. 
Salangana fuciphaga McGrecor and WorceEsTER, Hand-List (1906), 58. 
Collocalia fuciphaga fuciphaga OBERHOLSER, Proc. Acad. Nat. Sci. Philad. 
(1906), 58, 185. 
Cebu (Steere Exp., Bourns d Worcester) ; Luzon (Whitehead, Bourns & Wor- 
cester, McGregor); Mindoro (Steere Exp., Bourns & Worcester, McGregor) ; 
Negros (Hverett, Steere Exp., Whitehead); Palawan (Whitehead, Steere Exp.) ; 
Panay (Steere Exp., Bourns & Worcester). Nias, Java, Borneo, Natuna Islands, 
Mariana and Caroline Islands, New Guinea, Duke of York, Friendly and Loyalty 
Islands. 
Adult.—Very similar to Collocahia whiteheadi but the tarsi distinctly 
feathered. Hartert gives the following description and measurements : 
“Upper surface dark sooty brown with very little gloss; head, wings, and 
tail darker and more glossy; feathers in front of the eye whitish with 
dark brown tips; lower surface brownish gray with darker shaft-stripes ; 
under wing-coverts blackish brown. Total length, about 114; bill at base, 
4; wing, 112 to 119; tail, 56. The young bird is like the adult in 
plumage.” (Hartert.) 
“Two males measure, 120 in length; wing, 107; tail, 46; culmen, 6; 
tarsus, 7; middle toe with claw, 9. Two females: Wing, 116; tail, 48; 
culmen, 6; tarsus, 10; middle toe with claw, 7. Bill, feet, and nails 
black, legs light brown.” (Bourns and Worcester MS.) 
