488 Annals of the Carnegie Museum. 



Amazona diadema Zeledon, An. Mus. Nac. de C. R., I, 1887, 124 (Jimenez). 

 Amazona diademata Cherrie, Expl. Zool. en C. R., 1891-2, 1893, 49 (Boruca r 



abundant). 

 Chrysotis salvini Salvadori, Cat. Birds Brit. Mus., XX, 1891, 500 (Peje [J, 



Carmiol]). — Salvin and Godman, Biol. Centr.-Am., Aves, II, 1897,592 



(Nicaragua to Colombia). 



U. S. Nat. Museum: Bonilla (Ridgway) (Basulto), Pigres (Ridg- 



way). 

 Bangs Collection : Guayabal (Underwood). 

 Carnegie Museum : Guapiles (Carriker & Crawford), El Pozo de 



Terraba (Carriker). Three skins. 



In view of the fact that nearly all the Nicaraguan and Costa Rican 

 specimens of Amazona autumnalis salvini show signs of intergradation 

 with the northern form, A. a. autumnalis , and in many cases are 

 purely intermediates, I have placed the southern race as a subspecies 

 of the northern, making it as above givtn. Chiriquian and Panaman 

 birds are typical salvini, as are also birds from the extreme south- 

 western portion of Costa Rica (Terraba). 



The apparent distribution of this species in Costa Rica is rather 

 remarkable, if it really is as it seems to be. The bird is fairly com- 

 mon in the northern part of the Caribbean lowlands, but I never took 

 it in Talamanca (the southeastern part), while on the Pacific coast it 

 has never been recorded from the Nicoya peninsula or Guanacaste, 

 but is fairly common in the Terraba Valley. The bird probably 

 occurs to a small extent in the intermediate regions, having been 

 overlooked by collectors, but certainly cannot be common. They 

 keep almost entirely to the forests. 



195. Amazona albifrons albifrons (Sparrmann). 



Pdttacus albifrons Sparrmann, Mus. Carls , III, 1787, t. 52. 



Chrysotis albifrons Lawrence, Ann. Lye. N. Y., IX, 1868, 131 (Desmonte 

 [Frantzius], Nicoya [Zeledon]). — Frantzius, Jour, fiir Orn., 1869, 366 

 (Nicoya and San Mateo). — Salvadori, Cat. Birds Brit. Mus., XX, 1891, 

 311 (Nicoya [Zeledon]). — Underwood, Ibis, 1896, 445 (Miravalles). — 

 Salvin and Godman, Biol. Centr.-Am , Aves, II, 1897, 593 (Mexico to Costa 

 Rica). 



Amazona albifrons Zeledon, An. Mus. Nac. de C. R., I, 1887, 124 (Liberia). 



U. S. Nat. Museum : Miravalles (Underwood). 

 Bangs Collection: Tenorio (Underwood). 



Carnegie Museum: Bebedero, Miravalles (Carriker). Five skins. 

 This species, like A. auropalliata, is confined to the northwest- 



