I 



NO. 1116. PROCEEDINGS OF THE NATIONAL MUSEUM. 527 



under tail-coverts broadly margined terminally with light brownish 

 buff; bill entirely deep black; legs and feet dark brown. Length 

 (skin), 4.15; wing, 2.55; tail, 1.58; culmen, 0.55; gonys, 0.30; basal 

 width of mandible, 0.1*9; basal depth of bill, 0.35; tarsus, 0.75; middle 

 toe, 0.58. 



Immature male. — No. 115949, U.S.N.M. ; same locality and collector, 

 April 5, 1888. Head, neck, and chest uniform black; back, scapulars, 

 and v.ings dull black, the feathers margined with grayish olive; rumj) 

 and upper tail-coverts grayish olive, feathers dusky centrally; tail 

 dusky, the feathers margined with grayish olive; under parts, posterior 

 to chest, blackish, the feathers margined with pale grayish buffy, this 

 color prevailing posteriorly; under tail-coverts pale buffy, each with a 

 central sagittate mark of dusky, mostly concealed. Bill black, the ter- 

 minal portion of mandible more brownish; legs and feet dusky brown. 

 Length (skin), 4; wing, 2.50; tail, 1.52; culmen, 0.51; gonys, 0.29; basal 

 width of maxilla, 0.20; basal depth of bill, 0.32; tarsus, 0.70; middle 

 toe, 0.55. 



Adult female.— ^o. 125950, U.S.N.M.; Charles Island,' Galapagos, 

 April 1, 1891 ; C. H. Townsend. Above grayish olive, the feathers of 

 the pileum, back, and scapulars with dusky central spots; rump and 

 lower back uniform olive-gray ; wings and tail dusky, the feathers 

 margined with olive-gray, except outermost middle and greater wing- 

 coverts, which are more broadly margined terminally with light buffy 

 brown or Isabella color. Under parts grayish white, faintly tinged 

 with pale buff, everywhere, except on chin and throat, broadly streaked 

 witli dusky; maxilla black, mandible chiefly dusky brown ; legs and 

 feet dark brown. Length (skin), 4.15; wing (tips of primaries much 

 worn), 2.50; tail, 1.50; culmen, 0.55; gonys, 0.29; basal width of max- 

 illa, 0.27; basal depth of bill, 0.34; tarsus, 0.78; middle toe, 0.50. 



Altogether IIC specimens of this bird have been examined, the locali- 

 ties represented and number of specimens from each being as follows: 

 Chatham Island (42 specimens), Barrington (4), Hood (11), Charles (12), 

 Albemarle (17), Duncan (14), Indefatigable (4), Jervis (3), James (7) 

 and Abingdon (2). 



There is the usual amount of variation in this series, but whether 

 there is anything of local signiticance I am unable to determine, for the 

 reason that the series from the different islands are so unequal in 

 numbers, or at least in the number of adults, and also because nearly 

 one-third of the specimens are not available for comparison, having 

 been returned to Dr. Baur, to whose collection they belong. 



Among the specimens from Chatham and Abingdon islands are some 

 young ones which I can not decide whether they should be referred to 

 G.fuliginosa or G. parvula; in fact, two adult males, one from each 

 island, are doubtful, and I think it can be demonstrated that the line 



'There is no adult male, or at least noue witli the sex determined, from Chatham 

 Island in the series before me. 



