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CHAP. XIV.] THE NEOTROPICAL REGION. 53
be estimated from the fact, that Messrs. Salvin and Sclater have
catalogued more than 600 species from the comparatively small
territory of Guatemala, or the portion of Central America between
Mexico and Honduras. The great mass of the birds of this
sub-region are of Neotropical families and genera, but these are
intermingled with a number of migrants from temperate North
America, which pass the winter here ;
with some northern forms
on the high-lands ; and with a considerable number of peculiar
genera, mostly of Neotropical affinities.
The genera of birds peculiar to this sub-region belong to the
following families :—Turdidse. (2 genera) ;
Troglodytidae (1 gen.)
Vireonidse (1 gen.) ; Corvidse (2 gen.) ; Ampelidse (1 gen.)
Tanagridge (1 gen.) ; Fringillidse (2 gen.) ; Icteridse (1 gen.)
Formicariidse (2 gen.) ; Tyrannidse (2 gen.) ; Cotingida3 (1 gen.)
Momotidse (1 gen.); Trogonidse (1 gen.) ; Trochilidae (14 gen.)
Conuridse (1 gen.) ; Cracidse (2 gen.) ; Strigidai (1 gen.) ; in all
37 genera of land-birds. The Neotropical families that do not
extend into this sub-region are, Pteroptochidse ; the sub-family
Furnariincc of the Dendrocolaptidse ; the sub- family Conopha-
gince of the Tyrannidse; the sub-family Eicpicolince of the
Cotingidae ; Phytotomidse ; Todidae ; Opisthocomidse ; Chioni-
didse ; Thinocoridae ; Cariamidse ; Psophiidae ; Eurypygidoe ;
Palamedeidae ; and Struthionidae. On the other hand Paridae,
Certhiidae, Ampelidae, and Phasianidae, are northern families repre-
sented here, but which do not reach South America ; and there
are also several northern genera and species, of Turdidse, Troglo-
dytidae, Mniotiltidae, Vireonidae, Fringillidae, Corvidae, Tetra-
onidae, and Strigidae, which are similarly restricted. Some of
the most remarkable of the Neotropical genera only extend as
far as Costa Eica and Veragua,— countries which possess a rich
and remarkable fauna. Here only are found an umbrella bird,
(Ceph'alopterus gldbricollis) ; a bell bird (Chasmorhynchus tricar-
unculatus) ; and species of Dacnis (Ctroebidae), Butliraupis,
Eucometis, Tachyphonus (Tanagridae), Xiphorhynchus (Dendro-
colaptidae) ; Hypocnemis (Formicariidae) ; Euscarthmus (Tyran-
nidae) ; Attila (Cotingidae) ; Piprites (Pipridae) ; Capito, Tetra-
gonops (Megalaemidae) ; Selenidera (Ehamphastidae) ; Neomorphus