ORNITHOLOGY OF THE ISLAND OF TOBAGO. 
mentioned islands, might be expected somewhat to resemble them 
and the southern continent opposite, hut it tends, with a few excep- 
tions, more to the ornithology of North America than any ol the 
others, leading to that of the Carolinas and the southern parts of 
the northern continent. It possesses a large number of Sylvicolince 
and other North American species, but with one exception, it wants 
all the true northern Woodpeckers. It has however a considerable 
number of Psittacidce / three Humming Birds — species not common 
or wanting in most of the other islands. The CrotopJiaga is the 
large species, differing from that found in Tobago or Trinidad. But 
being an island of large extent, and abounding with wood, its orni- 
thology is more particularly characterized by the want of the more 
truly South American genera, such as Galhula , Momotus, Trogon , 
Pipra , &c. 
Porto Rico, again, of much larger comparative size than the 
numerous archipelago circling between it and Trinidad, shows a 
partially south-continental ornithology; but it will, in all proba- 
bility, draw a great many of its species from St. Domingo. M. 
Ledru mentions Centrums radiolatus , Loxia (spermophila) por- 
toricensis, and Saurothera vetula , all common Jamaica birds, but 
which, so far as we know, do not occur towards or in Trinidad. 
As resembling North America, we have Falco sparvcriiw, a con- 
siderable number of Sylvicolince , Columba carolincnsis and leuco- 
cephala , which however may be all entirely or partially migratory. 
As traced from Guiana, we have Rupicola aurantia and Psittacus 
guianensis. Four Humming Birds are mentioned, two of which, 
T. margaritaceus and mango , common in Tobago and Trinidad, do 
not reach Jamaica. On the other hand, the true continental types, 
Galbula, Trogon . , Momotus , Rliamphastos , &c., are wanting. 
From Trinidad wo have no correct or extended lists, but all our 
information tends to make its productions continental, and nearly 
allied to those of the opposite mainland. It is perhaps the only 
member of the group where we now find the Rhamphastidce , and 
the more splendid AmpeUdce , while the Humming Birds are very 
numerous. According to Lavaysse, various Parrots, two species 
of Toucan , and the Crax , are among the continental species. M. 
Ledru, in the expedition of Baudin, was not permitted to land, and 
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