KONOGEAPH OF THE FALCONIDiE, 
SYSTEMATICALLY ARRANGED BY 
Dr. T. T. KAUP. 
[Oken’s Isis, a German periodical of many years standing, con- 
taining, among information of very great interest, a series of valu- 
able ornithological papers, has, we believe, given way to the unsettled 
state of the continent, and for the present at least has ceased to 
appear. Dr. Kaup has sent us his Monograph of the Falconidce , 
translated by himself from that Journal of 1847, as improved in 
1848. This paper, as well as Dr. Kaup’s classification of birds, 
is very little known among the ornithologists of this country ; and 
although we cannot subscribe to all the views, however ingenious, 
detailed in the Monograph, we nevertheless think, that by making it 
better known, we shall lead to the study and development of those 
principles which bring us nearer to a true natural arrangement.] 
INTRODUCTION. 
I have written this Monograph only with a view to prove, by a 
special exposition, the principles which I have expressed in my 
classification of mammalia and birds, as a more detailed investi- 
gation will enable, and he perhaps more likely to induce, men of 
science, to enter into a closer criticism than the exposition of an 
idea, only but generally indicated, could do. How far I have suc- 
ceeded I must leave to time and to impartial criticism to decide. 
I made choice of the Falconidce, because this family is very nu- 
merous in its members ; I mean, that the greater number of them 
still exist, and that there are no such blanks in it as in the other 
families of the Accipitres. 
In examining this family, it became obvious that a large number 
of genera could not remain as such, but must onlv be considered as 
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