84 
PROCEEDINGS OF THE SCIENTIFIC ASSOCIATION. 
nidad an essential part of the continent in this respect. 
Still a comparison instituted on the one hand with the nor- 
thern part of Venezuela and the Antilles, and on the other 
hand with the vast region comprising the river-valleys of 
the Orinoko and the Amazons would probably have evolved 
some facts of interest. It is indeed most likely that the 
Doctor has omitted these points more from a want of trust- 
worthy information on the Zoology of the countries referred 
to, than from an unwillingness to follow out that part of the 
subject. But having obtained a sure groundwork in the 
specific determinations here given, the rest will, as Dr. 
Leotaud truly says, readily follow, and indeed will be a 
comparatively easy and pleasant task. For the scientific, 
man in Europe can scarcely form an idea of the difficulty of 
determining species in a Colony without Museums and with- 
out Libraries. As regards Ornithology, now that Dr. Leo- 
taud has given us the results of his seventeen years’ labor,, 
his work is a host in itself. And his valuable collection, so 
liberally presented to the Island, will, so soon as the names 
are attached to the specimens, put us on a very high foot- 
ing, and be ample illustration to his work. 
The fauna of which Dr. Leotaud treats is so large that it 
may readily be anticipated that but few families are unre- 
presented. The Corvidce are the only family at all remark- 
able by their absence ; the other missing groups being 
generally of limited distribution. The tribe Dentirostres of 
the order Passeres is remarkably well represented, having 
no less than 54 species. The order of Scansores, not a large 
one, has 20 species in Trinidad. I append the following 
analysis of the families, the arrangement being that of 
Mr. G. B. Gray 
