CHERRIE: ORNITHOLOGY OF THE ORINOCO REGION. 329 
Key to THE Genera, Species and Subspecies of Psittacidae. 
a. Forehead and more or less of the sides of face naked Gypopsitla vtdturina. 
a'. Forehead feathered. 
6. 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 
e. Bill blkck. 
/. General color of under parts green Ara severe. 
f. General color of under parts yellow Ara ararauna. 
e'. Maxilla white (except black triangle at base of cutting edge); 
general color of body red Ara chloroptera. 
d'. Without lines of feathers extending across the face Ara macao. 
c'. Cheeks feathered Diopsittaca hahni. 
b'. Loral region at least partly feathered. 
c. Tail long and much graduated (the central pair of rectrices always 
longest) , 
d. Brecist with transverse bars or scale-like appearance. 
e. Primary coverts red with yellowish tips Pyrrhura melanura. 
e'. Primarj- coverts blue like the primaries Pyrrhura picla picla. 
d'. Breast without transverse bars or scale-like appearance. 
e. Inner webs of tail feathers (except intermediae) reddish, and 
under parts uniform green Aratinga haemorrhoa. 
e'. Inner webs of tail feathers not reddish. 
/. Under parts 7iot 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. 
€. Nostrils opening in the middle of a naked cere, bill slightly 
compressed at base. 
/. Primary coverts orange red Brologens chrysopterus. 
/'. Primarj* coverts blue or bluish edged with green. 
g. Head black Eucinetus caica. 
g'. Head green (paler than back) Brotogeris devillei. 
^. 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 
g'. Inner webs of quiUs underneath with tinge of bluish green; 
feet dusky brownish 9 Psittacttla modesla mndesla. 
/'. Axillaries and under wing coverts not all green. 
g. Rump deep blue d^Psillacula modesla modesla. 
g'. Rump bright green (brighter than back) (^Psittacula guianensis viri- 
dissima. 
d'. Tips of 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 .4 masowa inornata. 
g' . Tail partly red or orange, especially at base. 
h. Head partly blue, pileum tinged with blue and lores 
blue Amazona amazonica. 
h'. Head without any blue, crown yellow, lores whitish .... .-1 mazona ochrocephala . 
f. Without red or orange red speculum; forehead red. lower 
back and rump red .4 mazona bodini. 
^. General color of under-parts including throat not green. 
/. Throat blue or yellow. 
g . Entire head, throat and breast blue Pionus menstruus. 
^'. Entire top of head black, throat yellow Pionites melanocephala. 
f. Throat and general color of under-parts reddish purple Pionus fuscus. 
Ara MACAO (Linnaeus). 
Psittacus macao L., Syst. Nat. ed. 10. 1758. p. 96. 
Ara macao Berlepsch & Hartert. p. 107. 
Native name Gnacamayo. 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. 
