BIRDS OF NOBTH AKD MIDDLE AMERICA. l05 



the arrangement of the "key" bemg slightly modified to conform to 

 the stylo adopted for the present work. 



KEY TO THE FAMILIES OF PSITTACIFORMES. 



a. Hook of maxilla nearly smooth beneath, or with only superficial longitudinal 

 ridges; tongue fringed or brushed at tip (except in Cyclopsittacidoe?). 

 h. Bill longer than deep, much compressed; mandible with gonys nearly straight, 

 or slanting in a gentle curve toward the tip. 

 c. Tongue fringed at tip; culmen grooved medially. .Nestoridas (extralimital).« 



cc. Tongue brushed at tip; culmen not grooved Loriidse (extralimital).^ 



66. Bill deeper than long, much swollen laterally; gonys strongly curved and as- 

 cending abruptly toward tip. (Character of tongue unknown.) 



Cyclopsittacidae (extralimital).*' 

 aa. Hook of maxilla transversely or obliquely ridged, in two lateral series; tongue 

 simple. 

 6. Sternum with a well-developed keel, 

 c. Orbital ring complete and with a process bridging the temporal fossa; left 



carotid normal ; head always crested Cacatoidag (extralimital).<^ 



cc. Orbital ring usually incomplete or if complete without a process bridging the 

 temporal fossa; left carotid superficial; i. e., inPaldiornis {=Conurus); head 



without a crest (except in one genus, Nymphicus) Psittacidae (p. 106). 



66. Sternum with only a rudimentary keel. (Orl)ital ring complete), 



Strigopidae (extralimital).« 



o "^Nestorinx Bonaparte, Consp. Gen. Av., i, 1850, 8 (includes Dasyptilus!). =Nes- 

 toridx Salvadori, Cat. Birds Brit. Mus., xx, 1891, 4; Shai-pe, Kev. Rec. At. Classif. B., 

 1891, 83; Haud-list, ii, 1900, 1. '^Strigopidae Bonaparte, Consp. Gen. Av., i, 1850, 

 8 (includes Stringopidae). 



(Comprising only the Genus Nestor Wagler, of four existing and two extinct species, 

 pecuUar to New Zealand.) 



6 =Lorinse. Bonaparte, Prodr. Syst. Orn. , 1840, 2. =Loriinae Bonaparte, Consp. Gen. 

 Av., i, 1850, 4. =Loriidx Salvadori, Cat. Birds Brit. Mus., xx, 1891, 11; Sharpe, 

 Rev. Rec. At. Classif . Birds, 1891,83; Hand-List, ii, 1900, 1. <^TrichoglossinaeBonix- 

 parte, Consp. Gen. Av., i, 1850, 3. <iTrichoglossidae Reichenow, Vog. Zool. Gart., ii, 

 1884, 34. 



(Comprising fourteen genera and nearly ninety species, all pecuUar to the Australian 

 Region.) 



<^ = Cyclopsittaeidx Salvadori, Cat. Birds Brit. Mus., xx, 1891, 8G; Sharjje, Rev. Rec. 

 At. Classif. Bmls, 1891, 83; Hand-list, ii, 1900, 8. 



(Consisting of two genera and about twenty-three species, peculiar to the Papaun 

 Subregion of the Australian Region.) 



d =zPlyctolophinae Bonaparte, Prodr. Syst. Orn., 1840, 1; >Consp. Gen. Av., i, 1850, 

 6 (includes Nasiterna, Mascarinus, and. Cor acopsis, l)elonging to Psittacidae). =Plisso- 

 lophidae Reichenow, Vog. Zool. Gart., ii, 1884, 8. =Cacatuidx Sclater, Ibis., 1880, 

 403; Salvadori, Cat. Birds Brit. Mus., xx, 1891, 101; Sharpe, Rev. Rec. At. Classif. 

 Birds, 1891, 83; Hand-list, ii, 1900, 9. =Cacatuinae Gadow, Bronn's Thier-Reichs, 

 Vog., ii, 1893, 222, 300. <^Calopsittadnx Salvadori, Cat. Birds Brit. Mus., xx, 1891, 

 135; Sharpe, Hand-list, ii, 1900, 11. 



e^Strigopidae Bonaparte, Consp. Gen. Av., i, 1850, 8 (includes Nestoridse!). 

 =Strigop)inae Bonaparte, Consp. Gen. Av., i, 1850, 8. =Stringopidx ^cl^ter, Ibis, 

 1880, 403; Reichenow, Vog. Zool. Gart., ii, 1884, 5; Stejneger, Science Record, ii, 

 1884, 155; Salvadori, Cat. Birds Brit. Mus., xx, 1891, 599; Sharpe, Rev. Rec. At. 

 Classif. Birds, 1891, 93; Hand-list, ii, 1900, 1. =Stringopi7MeGado\f, Bronn'sThier- 

 Reichs, Vog., ii, 1893, 222, 300. 



