NO. 1881. FORMS OF COLLOCALIA FUCIPHAOA—OBERHOLSER. 17 



Type-locality. — Siaba Bay, Nias Island, western coast of Sumatra. 



Oeograpliical distribution. — Island of Nias. 



This race differs from Collocalia fucipliaga fucipTiaga in its some- 

 what greater size; much more blackish (less broNvnish), more uniform 

 upper surface, the rump not at all paler than the back; and darker, 

 less brownish lower parts. It is much darker, less brownish (more 

 blackish) above than Collocalia fucipliaga amecTiana, the rump con- 

 color with the back, instead of decidedly paler; and the entire inferior 

 surface is very much more deeply colored. It departs still more from 

 Collocalia fucipliaga elaphra in its smaller size, uniform and much 

 darker, less brownish, more greenish glossed upper surface, and much 

 darker, less brownish under parts. Compared with Collocalia fuci- 

 pliaga capnitis, it is much smaller; is decidedly darker, more black- 

 ish, more uniform above, and darker, with less evident dusky shaft 

 strealvs below. 



The single specimen on which the separation of this race is based 

 was referred by the WTiter, in his previous paper,^ to Collocalia fuci- 

 pliaga fucipliaga, under a mistaken conception of the characters of 

 true Collocalia fucipliaga fucipliaga from Java, owing to imperfect and 

 scanty material; but the acquisition of more Javan specimens proves 

 that the Nias bird is very distinct. 



COLLOCALIA FUCIPHAGA MEARNSI,' new subspecies. 



Chars, suhsp. — EesembUng Collocalia fuciphaga vestita, but under 

 surface much more grayish (less brownish) ; abdomen usually lighter; 

 upper parts, particularly the pileum, more blackish or greenish (less 

 brownish). 



Description. — Type, adult female. No. 208356, U.S.N.M. ; Haights- 

 in-the-Oaks, altitude 7,000 feet, near Paoay, Benguet, Luzon Island, 

 Pliilippine Islands, July 28, 1907 ; Dr. Edgar A. Mearns. Upper parts 

 blackish clove brown, with a slight greenish sheen; wings and tail 

 brownish black with greenish or violet reflections, the inner edges of 

 the feathers dull brown; lores clove brown, the bases of the feathers 

 pure white; cheeks, auriculare, and sides of neck deep smoky brown; 

 under surface smoke gray; hning of wing clove brown. 



Measurements. — Wing, 106-119.5 (average, 111.5) mm.; tail, 

 45-52 (49.3); exposed culmen, 3.5-5 (4); tarsus, 8.1-10 (9). 



Type-locality. — Ilaights-in-the-Oaks, near Paoay, Province of 

 Benguet, Luzon Island, Philippine Islands. 



Geographical distribution. — Islands of Luzon, Mindoro, Mindanao, 

 Cebu, Negros, Panay, and Palawan, in the Philippine Archipelago. 



This new race may be readily distinguished from Collocalia fuci- 

 phaga fuciphaga by its darker, less brownish, more greenish-glossed, 



' Proc. Acad. Nat. Sci. Phila., July 2C>, 1906, pp. 186-187. 



' Dedicated to Dr. (Lieut. Col.) Edgar A, Meams, the well-known explorer, who collected the entire series 

 of specimens in the U. S. National Museum. 



2044P— Proc.N.M.vol.42— 12 2 



