BIEDS OF NOETH AND MIDDLE AMEEICA. 163 



KEY TO THE SPECIES AND SUBSPECIES OF EUPSITTULA. 



a. Crown without red. 



h. Feathers of auricular region narrow and distinctly outlined, with narrow paler 

 shaft-streaks. {Eupsittula pertinax.) 

 c. Cheeks, forehead, and sides of pileum yellow. 

 d. Crown, occiput, and hindneck green. (Islands of Curasao, Dutch West 

 Indies, and St. Thomas, Greater Antilles.) 



Eupsittula pertinax pertinax (p. 164). 

 dd. Hindneck and more or less of crown and occiput yellow. (Island of Bonaire, 



Dutch West Indies.) Eupsittula pertinax xanthogenia (p. 166). 



cc. Cheeks light brownish; forehead pale brown or dull whitish; whole crown 

 dull bluish green. 

 d. Orbital region, more or less extensively, yellow. 

 e. Yellow suborbital area more extensive, involving rictal region and more or 

 less of lores. (Tortuga Island, Venezuela.) 



Eupsittula pertinax tortugensis (extralimital).« 

 ee. Yellow suborliital area more restricted, the rictal region and lores light 

 brownish, Uke cheeks. (Island of xVruba, Dutch West Indies.) 



Eupsittula pertinax arubensis (p. 167). 

 dd. Orbital region not distinctly, if at all, yellow. (Guianas and mainland of 



Venezuela.) Eupsittula pertinax aeruginosus (extralimital). b 



bb. Feathers of auricular region normal (blended), without paler shaft-streaks. 



c. Crown more or less bluish green; cheeks brownish or olivaceous; under primary 



coverts and under surface of remiges olive-grayish or yellowish olive; chest 



light buffy olive, ecru-olive, or yellowish olive. 



d. Forehead dull bluish green, like crown; distal secondaries green, becoming 



more bluish terminally. (Adults with a yellow suborbital spot.) 



(Panama.) Eupsittula ocularis (p. 167). 



dd. Forehead light salmon-orange or ochraceous-salmon; crown dull grayish 

 blue; distal secondaries deep blue. 

 e. Under surface of remiges dull slate-gray or olive-gray; bill dull whitish or 

 light buffy. (Western Mexico to Costa Rica.) 



Eupsittula canicularls (p. 168). 



o Conurus seruginosus tortugensis Cory, Pub. 137, Field Mus. Nat. Hist., Oct. 25, 

 1909, 220 (Tortuga Island, Venezuela; coll. Field Mus. Nat. Hist.). 



f> [Psittacus] xruginosus Linnscus, Syst. Nat., ed. 10, i. 1758, "68"=98, no. 12 

 ("America"; based on Psittacus minor, gutture fusco, occidentalis Edwards, Birds, 

 177, pi. 177; type locality, as fixed by Berlepsch and Hartert, Cumana, Venezuela); 

 ed. 12, i, 1766, 142. — Aratinga seruginosus Stephens, Shaw's Gen. Zool., xiv, 1826, 

 139. — C[onurus] seruginosiis Gray, Gen. Birds, ii, 1845, 413, excl. syn. part. — Conurus 

 seruginosus Salvadori, Cat. Birds Brit. Mus., xx, 1891, 195. — [Psittacus] plumbeus 

 Gmelin, Syst. Nat., i, pt. i, 1788, 326 (no locality given; based on Brown-fronted Par- 

 rakeet Latham, Synopsis Birds, i, pt. 1, 243). — Psittacus inornatus Temm[inck], Kuhl, 

 Consp. Psitt., 1820, 92 (locality unknown). — Psittacus pertinax {not of Linnaeus) Kiister, 

 Orn. Atlas, Papag., 1837, 86, pi. 66 (supposed young). — Conurus pertinax Finsch, Die 

 Papag., i, 1867, 506, part; ii, 1868, 944, part. 



There are additional names which have been referred to this or closely related forms, 

 as Conurus chrysophrys Souance (Icon. Perr., pi. 11) and C. chrysogcnys Massena and 

 Souanc^ (Re\'. et Mag. de Zool., 1854, 72); but in view of the fact that the species 

 requires careful revision (there being unquestionably several geographic subspecies 

 included under the general specific or subspecific term seruginosus), these may for 

 the present be passed by. 



