114 BIRDS FROM THE PELEW AND MACKENZIE ISLANDS. [Jail. 16, 



Anous leucocapillus, Gould, P. Z. S. 1845, p. 103; Finsch & 

 Hartl. Orn. Centr. Polyn. p. 237. 



Sterna tenuirostris et S. leucocapilla, Scbleg. Mus. P.-B. Sterna, 



p. 37. 



Eight specimens from the Pelew Islands (Capts. Heinsohn and 

 Peters), where this species has not been hitherto noticed. This 

 species differs from A. stoliclus in its smaller size, the slender and 

 nearly straight bill, the darker, more sooty-black coloration, and the 

 purer, silvery-white surface of the head. In most of the specimens 

 there is a dark greyish tinge on the temporal region, the hind neck 

 and sides of neck. The younger bird is more of a sooty-brown 

 coloration (as in A. stoliclus), and has the upper wing-coverts par- 

 tially margined with bright umber-brown. A still younger bird has 

 the front and vertex already as pure white as the old one ; and this 

 is also seen in the nestling young, which is covered with black 

 down. The legs are pale, as in A. stoliclus, brownish or yellowish 

 brown, in some yellowish. We see no reason for separating A. leuco- 

 capillus, Gould, from A. tenuirostris, Temm. The dimensions no- 

 ticed by Prof. Schlegel are not sufficient to distinguish two species. 



Loner, al. rectr. long. culm. rict. altit. rostr. tars. dig. med. 



8"-8" 9'" 4"-4" 7'" 18-21"' 24-27'" 34-4'" 9-9£"' 11-12^'" (Pelew, 8 spec.) 



Kittlitz gives a very accurate representation of this species (Kup- 

 fert. t. 36. f. 1), which he collected in the Carolines and also near 

 St. Helena. 



51. Gygis alba (Sparrm.) ; Hartl. P. Z. S. 1867, p. 832; H. & 

 F. ibid. 1868, pp. 9 & 118. 



From the Pelews (Capt. Peters), and a beautiful pair (male aud 

 female) from Uap, where Mr. Kubary notices the species as rare. 



In the Eastern Carolines, observed by v. Kittlitz on the island of 

 Ualan (Denkwiirdigk. i. p. 382). 



52. Phaeton candidus, Briss. 



Phaeton Jlavirostris, Brandt. 



Two adult specimens from the Pelew Islands {Capt. Peters). In 

 one (collected by Capt. Heinsohn) all the white feathers above and 

 below, including the two black-shafted middle tail-feathers, are 

 strongly tinged with pale orange-rose (as in Keichenbach's fig. 852, 

 tab. xxx.). 



This species breeds on the Pelew group. In a former collection 

 thence, forwarded by Mr. Godeffroy, we received the young in the 

 first plumage. 



The ' Novara ' expedition procured a specimen (in October) on the 

 Stewart group ; and v. Kittlitz observed it in Ualan, Eastern Caro- 

 lines (Denkwiirdigk. einer Reise &c. i. p. 382). 



53. Carbo melanolexjcus, Gray ; H. & F., P. Z. S. 1868, p. 9. 

 Two adult specimens from the Pelew Islands {Capt. Peters). 



