190 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



ii. Under parts of body light malachite green, in strong contrast with 

 yellowish green (apple green) of cheeks; rump and under wing- 

 coverts bright cerulean blue. (Tres Marias Islands, western 



Mexico.) Psittacula insularis, adult male (p. 193). 



ee. Smaller under wing-coverts bicolored, the exterior ones light bluish green, 

 the central ones dark hyacinth blue; proximal primaries green. 

 (Caribbean coast district of Colombia; Panama?) 



Psittacula spengeli, adult male (p. 194). 

 66. Rump emerald green or vivid yellowish green. (Psittacula passerina.) 

 c. Rump yellowish green (night green); axillars mostly if not wholly green; 

 primary coverts, greater coverts, and secondaries with much less of blue, 

 the latter almost wholly green. 

 d. Under wing-coverts with only a central area of dark blue (as in P. spengeli); 

 green of upper parts purer. 

 e. Blue on under wing-coverts more extensive; axillars partly dark blue. 



(Guianas) Psittacula passerina passerina, adult male (extralimital).o 



ee. Blue on under wing-coverts much more restricted; axillars wholly green. 

 (Venezuela; Trinidad?.) 



Psittacula passerina viridissima, adult male (extralimital).& 

 • dd. Under wing-coverts wholly dark blue except along edge of wing (as in P. 



deliciosa) ; green of upper parts much duller (tinged with buffy olivaceous, 

 as in P. deliciosa). (Rio Branco Valley, northern Brazil.) 



Psittacula passerina cyanochlora, adult male (extralimital).c 



cc. Rump emerald green, tinged with turquoise on upper portion; axillars almost 



wholly dark blue; primary and greater wing-coverts and secondaries with 



much more of blue, the latter mostly blue, except along edges. (South side of 



lower Amazon.)... Psittacula passerina deliciosa, adult male (extralimital).d 



aa. Wings without any blue. (Adult females.) 



a [Psittacus] passerinus Linnseus, Syst. Nat., ed. 10, i, 1758, 103 (America; based on 

 Mus. Adolphi Friderici, i, p. 14); ed. 12, i, 1766, 150 (cites Psittacus brasiliensis Bris- 

 son, Orn., iv, 384; Edwards, Av., v, pi. 235, etc.). — Psittacula passerina (not of most 

 authors) Berlepsch, Novit. Zool., xv, 1908, 285 (Cayenne; crit. nomencl.; designates 

 type locality as Surinam). — Agapornis guianensis Swainson, Anim. in Menag., Jan. 1, 

 1838, 320 (Demerara, Brit. Guiana). — Psittacula guianensis Souancd, Rev. et Mag. de 

 Zool., 1856, 156; Icon. Perr., 1857, pi. 39; Ridgway, Proc. U. S. Nat. Mus., x, 1887, 

 543, part (monogr.) ; Salvadori, Cat. Birds Brit. Mus., xx, 1891, 251, part (in synonymy). 



b Psittacula viridissima Lafresnaye, Rev. Zool., 1848, 172 (Venezuela). — Psittacula 

 cyanoptera (not Psittacus cyanopterus Boddaert) Gray, List Birds Brit. Mus., 

 Psittacidse, 1859, 86 (Trinidad; Venezuela). — Psittacula guianensis (not Agapornis 

 guianensis Swainson) Salvadori, Cat. Birds Brit. Mus., xx, 1891, 251, part. 



c Psittacula cyanochlora Hartlaub, Proc. Zool. Soc. Lond., 1885, 615, pi. 38, fig. 2 

 (Rio Branco, n. Brazil; coll. Bremen Mus.). — P[sittacula] cyanochlora Ridgway, Auk, 

 v, 1888, 461, 462 (diagnosis; crit.); Hartlaub (in Riker and Chapman), Auk, viii, 1891, 

 160 (crit.). — Psittacula guianensis (not Agapornis guianensis Swainson) Salvadori, Cat. 

 Birds Brit. Mus., xx, 1891, 251, part (in synonymy). 



d Psittacula deliciosa Ridgway, Proc. U. S. Nat. Mus., x, sig. 34, Aug. 6, 1888, 533, 545 

 (Diamantina Creek, near Santarem, lower Amazon; coll. U. S. Nat. Mus.); Chapman, 

 Auk, viii, 1891, 160 (crit.); Salvadori, Ibis, 1906, 465 (crit.); Hellmayr, Novit. Zool., 

 xiv, 1907, 38 (Obidos, Brazil; crit.). — Psittacula guianensis (not Agapornis guianensis 

 Swainson) Salvadori, Cat. Birds Brit. Mus., xx, 1891, 251, jpart (in synonymy). 



