AVIFAUNA OF LAYSAN, ETC. 



65 



3. PHiEORNIS LANAIENSIS, Wihon. 



OLOMAO or OLOMAU. 



Phceornis lanaiensis, Wilson, Ann. & Mag. Nat. Hist. ser. 6, vol. vii. p. 460 (1891) (Lanai); id. Ave, 

 Ilawaiienses, pt. ii. text & pi. (1891). 



Adult male. Above dusky olive-brown, the head more blackish brown. The wings like those 

 of Ph. myiadestina, Stejn., but the outer edges of the primaries more brown and less 

 rusty, the bases of the same less rufous. Chin, throat, and breast pale grey, with a 

 faint isabelline tint, passing into the nearly pure white abdomen. Under tail-coverts 

 pale huffy white. Outer pair of rectriccs brown; outer webs brownish buff with a very 

 narrow outer marginal line and a small tip of pale cinereous, but without white. 

 Middle rectriccs the same colour as the back, the following ones edged with the same 

 colour on the outer webs. Iris hazel; bill black; tarsi and feet dark brown, soles 

 yellowish. Total length about 7J inches and more as measured by Palmer, but only about 

 7 in skins. In fourteen specimens from Lanai the wings measure 349 to 3'75 inches 

 (average 3'65), while in thirteen from Molokai they measure 3'65 to 3-9 (average 3'8), 

 tail 2-9 to 3-1,' tarsus 13 to 1-35, culmen O'G, breadth of bill just behind nostrils 0-27 to 

 0-3, middle claw without toe 0*75. 



This species is easily distinguished from Ph. obscura (Gm) by its much smaller size and 

 whiter unclerparts, and from Ph. myiadestina, Stejn., by the absence of the conspicuous 

 white markings in the tail and the smaller size. The bill is somewhat between those 

 two species in width, but varies a little, and it is not so much pointed as in Ph. obscura. 



The adult female is not to be distinguished from the male if my birds are properly sexed. 



The young bird is like those of the allied species, and I trust Mr. Keuleman's well-executed 

 figure will give a better idea of it then a long description. 



Sab. Lanai and Molokai. 



The specimens from Lanai, the island from which Wilson's type came, are as a rule much 

 whiter below, and the majority of them have the brown of the back somewhat less bright. 

 As the measurements of their wings show, there is also a decided tendency to longer wings in 

 the Molokai birds, but the longest of those from Lanai surpass several of those from Molokai 



