1906.] NATURAL SCIENCES OF PHILADELPHIA. 183 



white or whitish abdomen. In color it approaches rather near some 

 species of the subgenus Collocalia, notably some forms of Collocalia 

 francica, but the whitish abdomen is of course diagnostic. 

 Collocalia agnota sp. nov. 



Chars, sp. — Similar to Collocalia leucopygia, but upper surface 

 lighter, much more brownish; chin, upper throat, and sides of head 

 much paler brown ; ventral surface from the lower throat to anal region 

 more purely white, the jugulum and breast white like the abdomen, 

 and contrasting sharply with the grayish brown of the chin and upper 

 throat; feathers of breast and abdomen without noticeably darker 

 shaft lines ; basal portion of rectrices much paler. 



Geographical distribution. — Island of New Caledonia. 



Description. — Type, adult female. No. 8,757, American Museum of 

 Natural History; New Caledonia; Verreaux Collection. Upper parts 

 brownish black, the pileum with some metallic greenish gloss, the l^ack 

 with a faint suggestion of the same, the cervix a little lighter and more 

 brownish ; rump with a broad band of pure white, the feathers of which 

 have dark brown shaft lines; rectrices externally brownish black, with 

 a slight bluish metallic sheen, internally more brownish, and proxi- 

 mally growing paler until at base they are quite light brown, but without 

 white spots; wings brownish black with some metallic sheen, the inner 

 margins of quills fuscous; lores, orbital region, and a narrow line across 

 the forehead sepia brown, the feathers of the lores with pure white 

 bases; sides of neck and breast grayish brown, much lighter than the 

 cervix; chin and upper throat dull broccoli brown; rest of lower parts 

 medially almost pure white, though just appreciably brownish an- 

 teriorly, the sides of body washed with brownish, the shorter lower 

 tail-coverts pale brownish gray with darker shaft lines and whitish 

 margins, the longest ones dark brown, with distally a metallic sheen; 

 thighs brownish black; lining of wings dark brown. 



Wing, 105; tail, 46; exposed culmen, 4; tarsus, 9 mm. 



The relationships of this evidently distinct and apparently unde- 

 scribed species are undoubtedly with Collocalia leucopygia, as is indi- 

 cated by the conspicuously feathered tarsi, the white abdomen, and 

 the white rump band with dark shaft lines. The only specimen known 

 is the above described one in the American Museum of Natural History. 

 Collocalia innominata Hume. 



Collocalia innominata Hume, Stray Feathers, I, 1873, p. 294. 

 Collocalia maxima Hume, Stray Feathers, IV, 1876, p. 223 (Mergui and Bank- 

 asoon, Tenasserim) (nomen nudum). 



Chars, sp. — Quite different from Collocalia leucopygia: much larger; 



