BIRDS OF NORTH AND MIDDLE- AMERICA. 107 



KEY TO THE SUBFAMILIES OF PSITTACID.® . 



a. Rectrices with spiny tip Nasiterninae (extralimital). « 



aa. Eectrices not spine-tipped. 

 6. Furcula present (except in genera Psittacula and Agapornis). 

 c. 'Left carotid superficial. 

 d. Orbital ring often complete; plumage mostly green. 

 e. Tail rather long, generally graduated or cuneate; cere sometimes feath- 

 ered Arinse. & 



ee. Tail moderate or short, truncated or slightly rounded; cere always 



naked Pioninse. P 



dd. Orbital ring always incomplete; plumage gray or black, sometimes partly 



red Psittacinae (extralimital). <* 



ce. Left carotid normal (running, like the right one, in the hypoapophysial 



canal) Conurinas (extralimital). e 



bb. Furcula absent; orbital ring complete Platyoercinas (extralimital)./ 



a=Nasiterninse Salvadori, Cat. Birds Brit. Mus., xx, 1891, 138; Sharpe, Hand-list, 

 ii, 1900, 12. 



Includes a single genus and twelve species of very small parrots, peculiar to the 

 Papuan Subregion. 



6 = Macrocercmae Bonaparte, Prodr. Syst. Orn., 1840, 1; Consp. Gen. Av., i, 1850, 1. 

 =Arinx Sclater, Cat. Am. Birds, 1862, 345; Sclaterand Salvin, Nom. Av. Neotr., 1873, 

 111; Beddard, Struct, and Classif. Birds, 1898, 270. = Conurinx Salvadori, Cat. Birds 

 Brit. Mus., xx, 1891, 147; Sharpe, Hand-list, ii, 1900, 13. ^>Conurinx Salvin and 

 Godman, Biol. Centr.-Am., Aves, ii, 1897, 563 (includes, doubtless by inadvertence, 

 Pioninse!). 



An exclusively American group, comprising sixteen genera and more than one 

 hundred and twenty species. 



c =Psittadnx Sclater, Cat. Am. Birds, 1862, 352; Sclater and Salvin, Nom. Av. 

 Neotrr, 1873, 113. =Pioninx Salvadori, Cat. Birds Brit. Mus., xx, 1891, 267; Sharpe, 

 Hand-list, ii, 1900, 20. ~>Conurinx Salvin and Godman, Biol. Centr.-Am., Aves, ii, 

 1897, 563 (evidently by inadvertence!). — Chrysotinx Beddard, Struct, and Classif. 

 Birds, 1898, 270. 



A group of ten genera and more than one hundred species, of which nine genera 

 and eighty-three species are found only in America, the remainder being peculiar to 

 Africa. 



d =PsUtacinx Salvadori, Cat. Birds Brit. Mus., xx, 1891, 376; Sharpe, Hand-list, ii, 

 1900, 26. 



A small group consisting of three genera and ten species (one of them extinct) 

 peculiar to Africa, including Madagascar and neighboring islands. 



« <Platycercinae Bonaparte, Consp. Gen. Av., i, 1850, 2 (genera Polytelia, Palxornis 

 =Conurus, and Aprosmictus). —Palxornithinx Salvadori, Cat. Birds Brit. Mus., 

 xx, 1891, 386; Sharpe, Hand-list, ii, 1900, 27. 



An extensive group of seventeen genera (two extinct) and one hundred and thirty- 

 seven species (two extinct), confined to the Australian, Indo-Malayan, and African 

 Regions. 



/ (=?) Pezoporinae Bonaparte, Prodr. Syst. Orn., 1840, 2; Consp. Gen. Av., i, 1850, 1 

 (genus Pezoporus only). <J?latycereinae Bonaparte, Consp. Av., i, 1850, 2 (genera 

 Melopsittams, Efophema, Psephotus, and' Platycereus). =Platycerrinx Salvadori, Cat. 

 Birds Brit. Mus., xx, 1891, 539; Sharpe, Hand-list, ii, 1900, 37. >Platycercinx Bed- 

 dard, Struct, and Classif. Birds, 1898, 270 (includes Psittacula!). 



A group of eleven genera and about fifty-eight species, confined to Australia, New 

 Zealand, New Caledonia, and the Society Islands. 



