BLACK-THROATED WARBLER. 65 



by tlie resident naturalist, Herr Gatke. The results of 

 this visit, as well as that of Herr Gatke's experience, 

 have been communicated to the ornithological world in 

 the last number of "Naumannia." 



And now that we have seen the original articles, I 

 will take the liberty of correcting a slight error which 

 I made in the note at page 48. Pliyllopneuste horealis 

 is, I find, claimed by Blasius as an entirely wq^y species, 

 and he gives diagnostic descriptions of this bird as 

 compared with those of P. Jamnica and P. icterina, 

 between which two species it appears to be intermediate. 

 I shall offer a few remarks upon this and other 

 Syhiadc^, when I come to the end of this interesting 

 group. With regard to the general result of the 

 observations of Blasius and Herr Gatke in Helio-oland, 

 they are extremely interesting. 



Blasius gives at least four species entirely new to 

 Europe, of which two are American forms ; while Herr 

 Gatke mentions no less than twenty-three species which 

 he considers new to Europe, observed in the island up 

 to 1858; and he concludes his paper with the very 

 natural exclamation, what will 1859 bring forth? 



The most interesting part of these papers is the 

 number of American species which the lists contain: 

 among them is the subject of the present notice. Perhaps 

 the evidence adduced by these lists may rather remove 

 the hasty scepticism with which my introduction of the 

 Bald Eagle into the European fauna was met. 



Sylvia virens is an inhabitant of America generally. 

 The specimen which Herr Giitke records was killed on 

 Heligoland, on the 19th. of October, 1858, by a small 

 boy with a pea-shooter; and in order that there may 

 be no mistake about the determination of the species, 

 I will here give a verbatim translation of Herr Gatke's 



