96 ON THE GEOGRAPHY OF ANIMALS. 
of the falcon race, called the 
African crowned eagle (Aquila 
coronatus, fig. 40.), and which 
would seem to typify the Aquila 
destructor of tropical America, 
YL) 
Ay as the Senegal fishing eagle re- 
VY) HW ive 2 2 
Hy presents our Osprey. Five other 
hi 
i! iy Vitae 
(ll YY WU. 
Ws: 
ip 
ip 
falcons, peculiar to that colony 
have but recently been de- 
scribed ; a proof how little we 
are acquainted with the ornitho- 
logy of Western Africa. This 
region is further characterised 
as the chief metropolis of the 
richly coloured bush-shrikes 
(Malaconotus Sw.); the spe- 
cies called the Barbary, the olive, the black-collared, 
and several others, being sent from Senegal in consider- 
able numbers ; while from the same locality we derive the 
genus Prionops, or ground-shrike; it is the only example 
yet discovered of this peculiar form, and it represents 
the American bristle-heads (Dasycephala Sw.): un- 
like all other shrikes, it seeks its food upon the 
ground. 
(135.) Among the perching order of birds, there 
are numerous other intertropical families, or rather 
genera, entirely unknown in Northern Africa. The 
Drongo shrikes (dolius Cuv.) are not uncommon 
towards Sierra Leone, where also the caterpillar-catchers 
(Ceblepyris Cuv.), and more particularly the bristle- 
necked thrushes of the genus Brachypus Sw., have 
been discovered. We here find the beautiful sun-bird 
(Cinnyris Cuv.), representing, under the same degrees 
of latitude, the humming-birds of America. Three 
birds of great beauty —the Senegal, the long-tailed, and 
the chalybeate sun-birds—are particularly common’; 
while several others, scarcely inferior in brilliancy of 
plumage, have been received from the western coast. 
The richly coloured rollers of these countries have no 
