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328 GEOGRAPHICAL ZOOLOGY. [t>art iv.
been classed as a part of the genus Conurus) in a separate family,
on account of the absence of the ambiens muscle of the knee,
but as we are quite ignorant of the classificational value of this
character, it is better for the present to keep both as distinct
genera of the same family. The genera are :
Ara (15 sp.), Paraguay to Mexico and Cuba; Rhyncopsitta (1
sp.), Mexico ; Henicognathus \1 sp.), Chili ; Conurus (30 sp.), the
range of the family; Pyrrhura (16 sp.), Paraguay and Bolivia to
Costa Eica ; Bolborhynchus (7 sp.). La Plata, Bolivia and West
Peru, with one species in Mexico and Guatemala ; Brotogerys (9
sp.), Brazil to Mexico.
Family 81.—P3ITTACID.^.—(12 Genera, 87 Species.)
Neotropical
Si;b-regions.
-2.3.4 I
Nearctic
Sub-regions.
General Distribution.
Pal-earctic
Sub-regions.
Ethiopian
Sub-regions.
1.2.3.4
I .1
!
I
—
I Oriental Australian
Sun-KEGioNs. Sub-regions.
The Psittacidse comprise a somewhat heterogeneous assemblage
of Parrots and Paroquets of the Neotropical and Ethiopian regions,
which are combined here more for convenience than because
they are believed to form a natural group. The genera Chrysotis
and Pionus have no oil-gland, while Psittacula and Agapornis
have lost the furcula, but neither of these characters are pro-
bably of more than generic value. The genera are :
Psittacus (2 sp.), "West Africa ; Coracopsis (5 sp.), Madagascar,
Comoro, and Seychelle Islands ;
and South Africa ;
—
Pceocephalus (9 sp.), all Tropical
(^^^ — ^^ Caica (9 sp.), Mexico to Amazonia ;
Chrysotis (32 sp.), Paraguay to Mexico and the West Indian
Islands ; Triclaria (1 sp.), Brazil : Deroptyus (1 sp.), Amazonia ;
Pionus (9 sp.), Paraguay to Mexico; Urochroma (7 sp.). Tro-
pical South America ; Psittacula (6 sp.), Brazil to Mexico
Poliopsitta (2 sp.), Madagascar and West Africa ; Agapornis (4
sp.), Tropical and South Africa,
'
;