68 ART. H. — E. LÖNNBERG : 



is not complete enough to allow of the vvorkiug out of full 

 statistics concerning the origin and affinities of the different 

 elements represented. I therefore wish to confine myself in this 

 respect to what has already been said. There are, however, 

 some points of interest which can be stated now, and that is 

 the absence in Saghalin of certain types of southern origin 

 which have pushed so far north as Yesso, and of those which 

 are found on the continent on the other side of the Tatar 

 Sound. Among the southern or Japanese forms which have not 

 crossed the La Perouse Strait although present in Yesso, the 

 following genera may be mentioned : Hypsipetes, Zosterops, 

 Pericrocotus,^^ Treron, Hierocoocyx, Ceryle, Halcyon, Nyoticorax, 

 Boiaurus, Ibis, etc., not to mention a number of species 

 belonging to other genera. The absence of these southern 

 forms however loses much of remarkableness when we consider 

 the fact that already in Yesso a considerable reduction 

 takes place in the number of southern birds at the same 

 time as this island contains several northern forms that find 

 their southern limit of distribution there. A very typical example 

 of this is offered by Tetrastes banasla which reaches down 

 to, and is a resident in, Yesso ; while on the other hand, the 

 pheasants {Phasianus vei'sicolor and scintillans) are missing in 

 Yesso. That the same pheasants are missing in Saghalin also, 

 is natural enough ; but it could almost be expected that Phasianus 

 torqiiatus, which is " common et sédentaire dans le pays Oussourien 

 depuis la côte jusqu'à Amour ^Taczanowski), might have been 

 able to find its way into Yesso or Saghalin, although that is 

 not actually the case. Still more remarkable is the absence in 



1) Also represented in the Amur Province. 



