804 



ORNITHOLOGICAL EXPLORATIONS. 



Tables of dimensions. 

 A.— SPECIMENS FEOM ALASKA. 



B.— SPECIMENS FROM CHINA. 



■ Type of Ph. kennieotti Baiud. 



t Labeled Phyllopneuste sylvicultrix. 



Tlie Arctic Willow-warbler is one of tbe commonest summer birds in 

 the neighboring' birch and elder groves of Petropaulski. 



They are not known to breed on the islands, where they have been 

 collected only during tbe spring migration. In 1882 I shot only one 

 specimen on each island, but during the " bird-wave" of 1883, they were 

 plentiful in the northern part of Bering Island. 



The birds occurring on the islands belong to the same stock as those 

 inhabiting the mainland of Kamtschatka. As already mentioned, the 

 individuals from Alaska seem to travel on a route not touching Kam- 

 tschatka. 



136. Phyllopseustes xanthodryas (Swinh.). 



Iti63. — PhijUoscopusxanthodnjas Swinhoe, P. Z. S., 1833, p. 296.— Seebohm, Ibis, 1877, 

 p. 71. — Blakist. & PiiYER, Trans. As. Soc. Japan, "VIII, 1880, p. 22;?.— lid., 

 ibid., X, 1882, p. 159.— Jouy, Pr. U. S. Nat. Mus., 1883, p. 283.— Blakist., 

 Amend. List B. Jap., p. 16 (1884).— Plujllopneusie x. SwiNH., P. Z. S., 1871, 

 p, 35a.— D.wiD & Oust., Ois. Chine (p. 238) (1871). 



This species is said to be distinguished from Ph. horealis in having 

 the underparts more yellowish, a larger size, and a longer first pri- 



