202 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



last scantily feathered, sometimes with short bristle-like feathers only; 

 cere unfeathered, but with short, erect bristles, at least on top, its 

 anterior outline very strongly sinuate, that portion beneath the 

 rather large and fully exposed nostrils conspicuously curved back- 

 ward and then downward to the rictus; feathers of cheeks (malar 

 region) usually short, closely appressed. General color green, but 

 this varied with black (on head), orange-yellow (on head), red (on 

 under wing-coverts or axillars), or dark blue (on primaries and tip 

 of tail), the inner webs of rectrices (except terminally) yellow or red. 

 Range. — Southern Mexico to upper Amazon Valley and Guiana. 

 (Six species.) 



KEY TO THE SPECIES AND SUBSPECIES OF PYEILIA. 



a. Inner webs of lateral rectrices (except terminal portion) red. (Pyrilia hsematotis.) 

 b. Throat without any red; red of axillars invading innermost under wing-coverts; 

 feathers of pileum and hindneck with dusky reddish margins (in adults); chin 

 and throat without white. (Southern Mexico to western Panama.) 



Pyrilia hsematotis hsematotis (p. 203). 

 66. Throat with more or less of red; red of axillars not invading innermost wing- 

 coverts; feathers of pileum and hindneck without dusky reddish margins; 

 chin or upper throat (or both) with more or less of white. (Eastern Panam&.) 



Pyrilia hsematotis coccinioollaris (p. 206). 

 aa. Inner webs of lateral rectrices (except terminal portion) yellow (more greenish 

 on under surface). 

 6. Axillars and under wing-coverts green. {Pyrilia caica.) 

 c. Head black, bordered posteriorly by a tawny collar. (Guianas; Rio Javarri, 



eastern Peru7) Pyrilia caica, adults (extralimital). 6 



ce. Pileum green, sides of head olive-greenish; collar indistinct. 



Pyrilia caica, young (extralimital). 

 56. Axillars and under wing-coverts red; anterior outer lesser wing-coverts yellow 

 or orange. 



« Of the species referable to this genus I have not seen Pionopsitta pulchra 

 Berlepsch, which is said to closely resemble P. hsematotis. 



& Psittacus histrio (not of Miiller, 1776) Boddaert, Tabl. PI. Enl., 1783, 46 (Cayenne; 

 based on Perruche a tUe noir, de Cayenne Daubenton, PL Enl., pi. 744). — Caica histrio 

 Sclater, Proc. Zool. Soc. Lond., 1857, 266. — Amazona histrio Schlegel, Mus. Pays-Bas, 

 Psittaci, 1864, 64. — Pionias histrio Finsch, Die Papag., ii, 1868, 429. — Eucinetus 

 histrio Reichenow, Journ. fur Orn., 1881, 356; Consp. Psitt., 1882, 196; Vogelbild., 

 1881, pi. 24, fig. 6.— [Psittacus] pikatus Gmelin, Syst. Nat., i, pt. i, 1788, 347 

 (Cayenne; based on Caica Buffon, Hist. Nat. Ois., vl, 253; Perruche a tite noir, de 

 Cayenne Daubenton, PI. Enl., pi. 744; Hooded Parrot Latham, Synopsis Birds, i, pt. 

 i, 306).— Psittacula pileata Stephens, Shaw's Gen. Zool., xiv, 1826, 142.— [Poicephalus] 

 pileatus Swainson, Classif. Birds, ii, 1837, 301.— [Caica] pileatus Bonaparte, Rev. et 

 Mag. de Zool., 1854, 151 (Consp. Psitt., p. 8).— Pionus pileatus Burmeister, Syst. Ueb. 

 Th. Bras., ii, 1856, 193, footnote.— [Psittacus] caica Latham, Index Orn., i, 1790, 128 

 (new name for P. pileatus Gmelin, preoccupied).— P[ionus] caica Wagler, Mon. Psitt., 

 1832, 609.— Pionopsittacus caica Salvadori, Cat. Birds Brit. Mus., xx, 1891, 345. 



