BIRDS OF NORTH AND MIDDLE AMERICA. 105 



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

 the style adopted for the present work. 



KEY TO THE FAMILIES OF PSITTACIFOEMES. 



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

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

 6. 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. -Nestoridae (extralimital).« 



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



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

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



Cyclopsittacidae (extralimital). c 

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

 simple. 

 5. Sternum with a well-developed keel, 

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



carotid normal; head always crested Cacatoidse (extralimital).<* 



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

 temporal fossa; left carotid superficial; i. e., in Palseornis (=Conurus); head 



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



55. Sternum with only a rudimentary keel. (Orbital ring complete), 



Strigopidss (extralimital). 6 



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

 toridse Salvadori, Cat. Birds Brit. Mus., xx, 1891, 4; Sharpe, Rev. Bee. At. Classif. B., 

 1891, 83; Hand-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, 

 peculiar to New Zealand.) 



& =Lorinse Bonaparte, Prodr. Syst. Orn. , 1840, 2 . —Lariinae Bonaparte, Consp . Gen. 

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

 Rev. Rec. At. Classif. Birds, 1891, 83; Hand-list, ii, 1900, 1. < Trichoglossinae Bona- 

 parte, Qpnsp. Gen. Av., i, 1850, 3. <Trichoglossidae Reichenow, Vog. Zool. Gart., ii, 

 1884, 34. 



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

 Region.) 



c = Cyclopsittacidss Salvadori, Cat. Birds Brit. Mus., xx, 1891, 86; Sharpe, Rev. Rec. 

 At. Classif. Birds, 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 =Plyctolophinae Bonaparte, Prodr. Syst. Orn., 1840, 1; >Consp. Gen. Av., i, 1850, 

 6 (includes Nasitema, Mascarinus, and Coracopsis, belonging to Psittacidse). =PUsso- 

 lophidae Reichenow, Vog. Zool. Gart., ii, 1884, 8. =Cacatuid» 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. <CalopsitUuAnx Salvadori, Cat. Birds Brit. Mus., xx, 1891, 

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



*~>Strigopidae Bonaparte, Consp. Gen. Av., i, 1850, 8 (includes Nestoridae!). 

 =Strigopinae Bonaparte, Consp. Gen. Av., i, 1850, 8. =Stringopidx Sclater, Ibis, 

 1880, 403; Reichenow, V6g. 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. =Stringopinae Gadow, Bronn's Thier- 

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



