CHERRIE: ORNITHOLOGY OF THE ORINOCO REGION. 329 



Key to the Genera, Species and Subspecies of Psittacidae 



l\ Forehead f "a'l h"e?ed °' '"'' °^ '^' '''''' °^ ^^'' "^"""^ Gytopsilla vultunna. ' 



b. Lores and region about eye almost entirely naked (feathers if present 

 arranged in narrow lines) . 

 c. Cheeks (at base of mandible) naked. 



d. Lines of feathers extending from the lores below the eyes across 

 the face. 

 e. Bill black. 

 /. General color of under parts green 4^a sever a 



' ^'\,'^^u'^''^^u°^°^, °^ ""^^^ P^'"'^^ ^'«"°^ ■ • ■ ■ • ^ra ararauna. 



e . Maxilla white (except black triangle at ba.^e of cutting edge)- 



^' M<^?u''''fy°^°' f.^°'^J ""^^ • ■ • ■.. • ■ • • '!'■« chloroptera. 



d. Without lines of feathers extending across the face Ara macao 



c Cheeks feathered ■■••■•■ '. '. Diopsitlaca hahni. 



b . Loral region at least partly feathered. 



c. Tail long and much graduated (the central pair of rectrices alwavs 

 longest). 

 d. Breast with transverse bars or scale-like appearance. 



e Primary coverts red with yellowish tips Pyrrhura melanura. 



e Primary coverts blue like the primaries Pyrrhura picta picla. 



d . Breast without transverse bars or scale-like appearance. 



e. Inner webs of tail feathers (except intermediae) reddish, and 



under parts "niform green . Aratinga haemorrhoa. 



e . Inner webs of tail feathers not reddish. 

 /. Under parts not uniform. Lower breast and belly washed 



with orange ochraceous . . Aratinga chrysophrys. 



. „ /. • Under parts uniform green (no orange wash) Aratinga leucophthalmus . 



c . Tail not long and much graduated. 



d. Tips of tail-feathers sharply tapering, not rounded. 



e. Nostrils opening in the middle of a naked cere, bill slightly 

 compressed at base. 



/. Primary coverts orange red. . Brotogeris chrysopterus. 



J . Primary coverts blue or bluish edged with green. 



^; J1^^ J ^^^'^^ ■■■ ■, Eucinelus caica. 



g . Head green (paler than back) Brotogeris devil'ei 



e'. Nostrils opening at the base of the cere and bill slightly ex- 

 panded (not compressed) at base. 

 /. Axillaries and under wing coverts green, not blue or purple. 

 g. Inner webs of quills underneath greenish; feet pale 



brownish 9 Psittacula guianensis viri- 



/ T 1 r •,, dissima. 



g . Innerwebsof quills underneath with tinge of bluish green; 



,, , ^?et dusky brownish 9 Psittacula modesta modesta. 



J ■ .AxiUanes and under wing coverts not all green. 



g. Rump deep blue... . (^Psittacula modesta modesta. 



g . Rump bright green (brighter than back) tfPsittacula guianensis viri- 



j, _. r , ., r , , , dissima. 



a'. Ups 01 tail-feathers rounded. 



e. General color of under-parts from throat to crissum green. 

 /. Wing with a red or orange red speculum. 



g. No red color on the tail, no yellow on the head Amazona inornata 



g ■ Tail partly red or orange, especially at base. 



h. Head partly blue, pileum tinged with blue and lores 



, , „ ; ■ • -A mazona amazonica. 



« .■ Head without any blue, crown yellow, lores whitish. .. . Amazona ochrocephala. 

 f . Without red or orange red speculum; forehead red, lower 



, „ back and rump red Amazona bodifii. 



e . General color of under-parts including throat not green. 

 /. Throat blue or yellow. 



°, ■ ^ntirc head, throat and breast blue Pionus menstruus. 



fi ^^ri^^^"^ ^°^ °^ ^^'^'^ black, throat yellow Pionites melanocephala. 



J . Throat and general color of under-parts reddish purple Pionus fuscus. 



Ara MACAO (Linnaeus). 

 Psittacus macao L., Syst. Nat. ed. lo. 1758. p. 96. 

 Ara macao Berlepsch & Hartert, p. 107. 



Native name Guacamayo. Not uncommon, but very wary. 



Eye straw-yellow; bill above horny white with tip slate and angle 

 at base black, below black, bare skin about head dead flesh white; feet 

 slate blackish. 



