Carriker : List of the Birds of Costa Rica. 407 



Messrs. Salvin and Godman (Biologia) say that " The true G. 

 lazvrencei is replaced in Costa Rica by this species." From lack of 

 material they have failed to observe the great differences between the 

 two birds. With adult males of both species before me the differ- 

 ences are so apparent that no confusion should arise. G. lawrencei 

 has a white forehead, dark grass-green nape, deep violet-purple 

 mantle, with the back and wings deep olive-brown or sepia. G. 

 costarice?isis has a cinnamon-buff forehead, lighter and more metallic - 

 green nape, mantle more vinous-purple and the back and wings rich 

 purplish-chestnut. In lawrencei the slaty-blue of the under parts ex- 

 tends to the belly, while in costaricensis it covers only the upper half 

 of the breast. 



This is a bird exclusively of the forest and is rarely found at low 

 altitudes, being confined to the plateau region and the high mountains. 

 Like all the species of the genus it keeps close to the ground. 



41. Geotrygon chiriquensis Sclater. 



Geotrygon chiriquensis Sclater, P. Z. S., 1856, 143 (Chiriqui, Panama). — 

 Sclater and Salvin, Exotic Orn., 1867, Plate LXII. — Boucaru, P. Z. S., 

 1878, 43 (Irazu and La Candelaria). — ZeledoN, An. Mus. Nac. de C. R., 

 I, 1887, 127 (La Candelaria, El Zarcero de Alajuela). — Salvadori, Cat. 

 Birds Brit. Mus., XXI, 1893, 579 (Veragua and Costa Rica). — Salvin and 

 Godman, Biol. Centr.-Am., Aves, III, 1902, 270 (Tarrazu [Underwood in 



Geotrygon cczmleiceps Lawrence, Ann. Lye. N. Y., IX, 1868, 137 (Cervantes 

 [Zeledon]). — Frantzius, Jour, fiir Orn., 1869, 371 (Cervantes). 



Bangs Collection : La Estrella, Cerro de Santa Maria (Underwood). 

 Carnegie Museum : Ujurras de Terraba (Carriker). Four skins. 



An adult male and female are exactly alike with the exception that 

 the male is a little larger and has the violet-purple of the mantle 

 deeper and brighter and extending further backward. Of two imma- 

 ture males, one agrees with Mr. Salvador's description (Cat. Birds 

 Brit. Mus.) of the immature, the other (a little older) has attained 

 the plumage of the adult on the head and lower parts, but still has 

 some of the secondaries and tertials as well as lesser wing-coverts and 

 scapulars with black subterminal bars. 



Found sparingly over the higher portions of the plateau region and 

 the higher mountains, wherever virgin forest still persists in any quan- 

 tity. I found them fairly abundant in the heavy forest near the con- 

 tinental divide at the headwaters of the Rio Ceibo, a tributary of the 



