328 GEOGRAPHICAL ZOOLOGY. [PART 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 ; Henicognaihus (\. sp.), Chili ; Conurus (30 sp.), the 

 range of the family; Pyrrhura (16 sp.), Paraguay and Bolivia to 

 Costa Rica ; Bolborhynchus (7 sp.), La Plata, Bolivia, and West 

 Peru, with one species in Mexico and Guatemala ; Brotogerys (9 

 sp.), Brazil to Mexico. 



FAMILY 81. P31TTACIDJE. (12 Genera, 87 Species.) 



GENERAL DISTRIBUTION. 



The Psittacidae 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 ; Pceocephalus (9 sp.), all Tropical 

 and South Africa ; ( 2063 2066 ) 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. 



