446 THE ZOOLOGIST. 
attention is the width of the terminal white band of the tail- 
feathers. In the typical form the average width is stated to be 
18°3 mm., while in the slender-billed subspecies it is given as 
averaging 27°4 mm. onthe outer pair. The difference in the 
width of the white band is also admitted by Mr. Seebohm, and I 
find it corroborated by the material before me. I will remark, 
however, that this character is also subject to some individual 
variation, but, so far as I can make out, there is no local 
variation within the two races. On the other hand, as in 
many other birds, the white ends to the tail-feathers are 
probably, on the whole, smaller in the young birds than in the 
old ones. 
With these remarks in view, | shall now proceed to examine 
the material before me. 
The first one is U.S. National Museum, No. 110,015, from 
Petropaulski, Kamtschatka, collected December 27th, 1885. It 
is the easternmost example I have seen, and is a very pronounced 
slender-billed bird, agreeing closely with Blasius’s fig. 2, pl. 1. 
Tts coloration exhibits the maximum amount of white, as might 
be expected. 
Next come four birds collected by Mr. P. L. Jouy, at Fusan, 
southern extremity of Korea (latitude 35°), the southernmost 
locality, I think, in which specimens of this species have ever 
been taken (U.S. National Museum, Nos. 114,097—114,100). 
They are all alike, and very characteristically slender-billed, 
belonging undoubtedly to N. macrorhynchus, both on account of 
the shape and size of the bill and the width of the white tail- 
band. From Norway I have four slender-billed birds, evidently 
Siberian immigrants, collected near Bergen during the great 
invasion in 1887* (U.S. National Museum, Nos. 113,218—1138,222), 

* T have seen only a few notices of the 1887 migration. According to 
J. Collin, in his ‘Bidrag til Kundskaben om Danmarks Fuglefauna,’ the 
Nutcracker has never before occurred in such numbers in Denmark. In 
Norway the immigration was remarkable, both on account of the number of 
birds and the extent of country covered, specimens having been taken even 
north of Tromsé. Near Bergen about one hundred individuals were killed 
during September, and Mr. V. Storm states that the bird appeared in the 
vicinity of Trondhjem in vast numbers about the first of that month, 
Numerous specimens were received from Roeraas, Guldal, Girkedal, Rissen, 
and more northern localities.— (K. Norske Vid. Selsk. Skr. 1886—’87, 
Trondhj., 1888, p. 52: Naturen, xii., 1888, p. 224. 
