596 PSITTACIDZ. 
Olivaceo-viridis, tectricibus alarum minoribus oleagineis, pallide fusco terminatis ; pileo summo et loris niveis, 
plumis omnibus cervicis, capitis laterum et pectoris late cwruleo limbatis, gutture medio albo ; alis saturate 
cyaneis viridi terminatis, tectricibus majoribus ejusdem coloris, secundariis cyaneis viridi marginatis ; 
cauda viridi, rectricibus lateralibus ad basin et tectricibus subcaudalibus coccineis ; rostro albicante corneo ; 
pedibus carneis. Long. tota circa 9-0, ale 6:9, caude 3-2, rostri culminis 1-3, tarsi 0°6. (Descr. maris 
ex Cuesta de Misantla, Vera Cruz, Mexico. Mus. nostr.) 
9 mari similis, coloribus omnibus pallidioribus, pileo antico tantum albo. 
Hab. Mexico (Bullock 18), Cuesta de Misantla (#. D. G.), Mirador (Sartorius, Sumi- 
chrast }°), Cordova (Sallé?), Potrero, Orizaba (Sumichrast 1°), Villa Alta (Boucard) ; 
British Honpuras, Orange Walk (G. F. Gaumer), Belize (Blancaneaux) ; GUATEMALA 
(Skinner +), Chisec, Choctum, Coban, Lanquin ( 0. S. & F..D. G8); Honpuras, San 
Pedro (G. M. Whitely®); Nicaraeua, Escondido R. (fichmond }*), La Libertad, 
Rama, San Emilio (W. B. Richardson), Greytown (Holland 14); Costa Rica, 
Angostura (Carmiol), San José (v. Frantzius ©, M. L. Calleja 4), Alajuela, Zarcero 
de Alajuela, Los Trojas, Barranca, Jimenez, Monte Redondo (Zeledon'+), San 
Carlos (Boucard °), Orosi, Tucurriqui (v. frantzius "). 
Though described by Spix in his great work on the birds of Brazil, this Pionus does 
not belong to that country, but is a purely Mexican and Central-American species, 
ranving from the State of Vera Cruz through British Honduras, Guatemala, and 
Nicaragua to Costa Rica, but, so far as we know, keeping strictly to the country lying 
to the eastward of the central mountain-range. We found it to be abundant in Vera 
Paz as high as the town of Coban, and low down in the valley to the eastward at 
Lanquin. Mr. Richmond speaks of it as abundant on the Escondido in Nicaragua, and 
he noted that the iris in life is orange 3°. 
The white head of the adult bird of this species renders it easily distinguished from 
the blue-headed P. menstruus, the only other Pionus found within our limits. 
PIONOPSITTACUS. 
Pionopsitta, Bonaparte, Rev. et Mag. Zool. 1854, p. 152. 
Pionopsittacus, Salvadori, Cat. Birds Brit. Mus. xx. p. 338. 
This genus has much the appearance of Pionus, but its members generally are 
smaller, more brightly coloured birds ; but the essential difference is the presence of a 
tufted oil-gland which Pionopsittacus possesses in common with a number of other 
South-American genera of Pionine not represented in Central America. Its nearest 
ally is Caica, from which it differs, according to Count Salvadori, in the outline of the 
wing, the second and third primaries being the longest, and the first equal to the fourth, 
instead of the second, third, and fourth being the longest, and the first equal to the 
fifth. 
Count Salvadori admits nine species of Pionopsittacus, of which two belong to our 
region, viz.: P. hematotis, of rather wide range from Southern Mexico to Western 
Panama, and the very closely-allied P. coccineicollaris, which is only known from the 
Line of the Panama Railway. 
