202 BULLETIN 50, UIHTED 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-yeUow (on head), red (on 

 under wing-coverts or axiUars), 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 PTRILIA. 



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

 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 tliroat without white. (Southern Mexico to western Panamd.) 



Pyrilia hxmatotis haematotis (p. 203). 

 bb. Throat %vith 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 tlii'oat (or both) with more or less of white. (Eastern Panamd.) 



Pyrilia haematotis coccinicollaris (p. 206). 

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

 on under surface). 

 b. Axillars and under wing-coverts green. (Pyrilia caica.) 

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



eastern Peru?) Pyrilia caica, adults (extralimital) . 6 



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



Pyrilia caica, young (extralimital). 

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

 or orange. 



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

 Berlepsch, wlxich is said to closely resemble P. haematotis. 



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

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

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

 Psittaci, 1864, Qi.—Pionias histrio Finsch, Die Papag., ii, 1868, 429.— Eudnetus 

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

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

 (Cayenne; based on Caica Buff on, Hist. Nat. Ois., vi, 253; Perruche h tete noir, de 

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

 i, 306).— Ps^■Hacu^ap^7eaia 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. S).—Pionus pileatus Burmeister, Syst. TJeb. 

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

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

 1832, Q09. —Pionopsittacus caica Salvadori, Cat. Birds Brit. Mus., xx, 1891, 345. 



