BIRDS OF THE ANAMBA ISLANDS, 27 
species of Collocalia lowi, a bird with well-feathered tarsi, is clearly 
doing it violence; and this the more since true Collocalia lowi with 
feathered tarsi occurs also on Palawan Island,’ the very locality 
from which comes its supposed subspecies palawanensis! This last 
fact was apparently overlooked by Mr. Stresemann in diagnosing 
Collocalia whiteheadi palawanensis. 
The bird from Mindanao Island, described by the writer as Collocalia 
origenis,? which Mr. Stresemann,’? without examining any specimens, 
suggests is possibly the same as Collocalha whiteheadi, is undoubtedly 
distinct from the latter. That it may eventually prove to be a geo- 
graphical race of that species may well be so; but the original speci- 
mens in the United States National Museum, which, so far as we know, 
are all that exist in any collection, certainly do not indicate such to be 
the case. This bird has an entirely unfeathered tarsus, like Collocalia 
whiteheadi, of the island of Luzon, but differs from that species in its 
decidedly darker, more blackish, and more uniform coloration above, 
the rump not being appreciably lighter than the back; and in its 
also much darker and more uniform lower surface, with the throat 
not noticeably if at all paler than the breast and abdomen, instead 
of decidedly lighter, as in Collocalia whiteheadi whiteheadi and 
Collocaha whiteheadi palawanensis. In fact, Collocalia origenis is 
decidedly darker above than even Collocalia louwr, and fully as dark 
and uniform, in some specimens darker, below than is that species; 
and in the general aspect of its coloration is really more like Collocalia 
low than like Collocalia whiteheadi. It is, however, of course, readily 
separable from the former by its unfeathered tarsi, and also by the 
almost total absence of blackish shaft-lines on the feathers of the 
posterior lower parts, in addition to the color differences already 
noted. 
COLLOCALIA VESTITA AMECHANA Oberholser.‘ 
Collocalia fuciphaga amechana OBERHOLSER, Proc. U.S. Nat. Mus., vol. 42, March 
6, 1912, pp. 12, 13 (Pulo Jimaja, Anamba Islands). 
Doctor Abbott obtained only two specimens of this swiftlet: 
Adult female, No. 171071, U.S.N.M.; Pulo Jimaja, September 19, 
1899. Length, 127 mm. 
Adult female, No. 171072, U.S.N.M.; Pulo Jimaja, September 19, 
1899. Length, 124 mm. 
These are both more or less in process of molt. They have been 
fully discussed in previous papers.> The second specimen mentioned 
above is the type of the subspecies. 
1 See Grant, Ibis, 1895, p. 460. 
2 Proc. Acad. Nat. Sci. Phila., July 26, 1906, p. 191. 
8 Verhandl. Ornith. Gesells. Bayern, vol. 12, May 15, 1914, p. 11. 
4 Yor the change of specific name, see Stresemann, Verhandl. Ornith. Ges. Bayern, vol. 12, May 15, 1914, 
pp. 2-6. 
5 Oberholser, Proc. Acad. Nat. Sci. Phila., 1906, p. 189; Proc. U. S. Nat. Mus., vol. 42, Mar. 6, 1912, p. 13. 
