4S 
INTRODUCTION. 
of those, particularly the last, and see considered 
as of high rank those portions which have more 
lately been placed in a subordinate value. 
In the systems of Vigors and Swainson, based 
on the principles laid down by Mr Macleay, we 
have for this order the primary divisions of 
Cuvier’s “ passeres” adopted, including also his 
third order “ grimpeurs,” but by both with a 
considerable variation in the distribution of the 
genera. This, indeed, is the chief point of diffe- 
rence between our two followers of Macleay ; for 
while they agree in the value of the order, and in 
its primary divisions, they differ widely in what 
should constitute the types of the families and 
sub-families, and in the station which the genera 
should hold in regard to each other; but the 
system of the last named ornithologist having 
been adopted, with slight deviations, as the 
arrangement of the present volumes, we subjoin 
a table of the leading divisions of the inces- 
sores, which, on comparison, will at once exhibit 
the differences which exist between them. 
INCESSORES. 
IHCNTIHOSTKES. 
. Lantidtv. Mcrulidtv. Sylviadar. Ampelida. Musdcapida. 
£ I *Lanianas. Bracliypodinre. *Saxicolinre. Leiotrichanse. Querulime. 
~ i Thwnnophilinffi. *Myotherlnaj. *Philotnelin«. Vireoinm. PsarianiB. 
^ < Dlcrurime. *Merulinle. *Hylvint)iB. *DombycillintE. FluvicoUnm. 
A J Ceblepyrinie. Crateropodinse.sPariamn. Ampelinic. *Museicapinre 
^ ^Tyramiinaj. *Orio!inaj. *Motncillinffi. Piprinte. Eurykuminaj. 
* The families marked thus * have British representatives. 
