270 PEEISTEEID^. 



It will therefore be seen that both dark- and light-ftonted forms occur in the same 

 countries, while examples from Jalapa and Jali in Nicaragua are intermediate. 

 Climatic influences are perhaps responsible for the intensity of colour in certain 

 specimens, and judging from the evidence at present at our disposal we agree with 

 Count Salvadori as to the impossibility of dividing G. albifacies into two species 

 or races. 



Beyond the fact that this, like other species of Geotrygon, is an inhabitant of forest- 

 districts, there is no record of its habits. 



7. Geotrygon chiriquensis. 



Geotrygon chinquensis, Scl. P. Z. S. 1856, p. 143' ; Salv. P. Z. S. 1867, p. 159 = ; 1870, p. 217' ,- 



Scl. & Salv. Ex. Orn. p. 123, t. 62* ; Boucard, P. Z, S. 1878, p. 43 ' ; Zeledon, An. Mus. 



Nac. Costa Rica, 1887, p. 127 " ; Salvad. Cat. Birds Brit. Mus. xxi. p. 579 ' ; Bangs, Pr. New 



Engl. Zool. Club, iii. p. 24 '. 

 Geotrygon cteruldceps, Lawr. Ann. Lye. N. Y. ix. pp. 136 % 148 " ; v. Frantz. J. f. Orn. 1869, 



p. 371 " ; Salv. Ibis, 1869, p. 317 ". 



G. albifacid similis, sed satnratior et magis castanea ; pileo plumbescente, fronte vix dilutiore ; plumis 

 squamatis colli postici gutturisque absenfcibus ; corpore subtus castaneo vel saturate cinnamomeo, abdo- 

 mine magis ockrascente, gutture albicante. Long, tota circa 10-2, alse 6-0, caudae 3-4, culm. 9-8, tarsi 1-65. 

 (Descr. maris ex Castillo, Veragua. Mus. nostr.) 



Ilab. Costa Eica, Cervantes (v. Frantzius i^, Zeledon ^), El Zarcero de Alajuela 

 {Zeledon^), La Candelaria {Zeledon^, Boucard % Volcan de Irazu {Boucard^), 

 Tarrazu ( Underwood, in litt.) ; Panama, David [Bridges ^ ^), Castillo, Calovevora, 

 Calobre, Volcan de Chiriqui {Arce ^ ^), Boquete and Volcan de Chiriqui 4500 to 

 10,000 feet {Bronn »). 



This is a southern representative of G. albifacies. M. Boucard^ says that the 

 " Paloma del Monte," which is the name by which it is known to the Spaniards, is 

 very scarce in Costa B,ica, and that it keeps entirely to the ground. Nothing further 

 has been recorded respecting its habits. 



Older GALLINiE*. 



This Order includes the majority of the species commonly known as " Game "-Birds, 

 such as Grouse, Quails, Partridges, Pheasants, Turkeys, and Curassows, all of which 

 exhibit the following characters: — The nasals are holorhinal, and true basipterygoid 

 processes are absent, but represented by sessile facets situated far forward on the 

 sphenoidal rostrum. The episternal portion of the sternum is perforated to receive a 

 process from the base of the coracoids, and there are two deep notches on each side of 



* I have to acknowledge the assistance of Mr. Ggilvie-Grant in the preparation of the MSS. of the 

 Gallinse. 



