CEPHALOPTEETJS. 145 



1. Cephalopterus glabricollis. 



Cephalopterus glabncollis, Gould, P. Z. S. 1850, t. 20 ^ Cab. J. f. Om. 1861, p. 254 ' ; Salv. P. Z. S. 

 1867, p. 150 ' ; 1870, p. 201 * ; Lawr. Ann. Lye. N. Y. ix. p. 117 ' ; Frantz. J. f . Om. 1869, 

 p. 310'; Boucard, P.Z.S. 1878, p. 66"; Scl. Cat. Birds Brit. Mus. xiv. p. 400". 



Niger, supra chalybeo-nitens ; crista elongata ad basin nigra undique expandente : gula tota calva, rubra ; 



carunoulo pectorali quoque calvo, plumis elongatis sparsis tantnm ad ejus apicem : rostro nig^o, pedibus 



plumbeis. Long, tota 16-0, alse lO'O, caudse 4-7, rostri a rictu 2-2, tarsi 1-9. 

 5 mari similis, sed obscurior ; capitis plumis minus elongatis ; gula tantum utrinque calva, linea mediana plu- 



mosa vestita, carunoulo parvo. (Descr. maris et feminae ex Turrialba, Costa Bica. Mus. nostr.) 



Eab. Costa Eica, Turrialba {Arce, Carmiol), Tucurriqui [Arce), San Carlos {Boucard ^), 

 San Jose {y. Frantzius^), Angostura and Dota Mountains (Carm^oZ^); Panama, 

 Cordillera de Chiriqui ^ ( Warszewicz ^), Cordillera de Tole, Calovevora {Arci). 



The first specimens of this species sent to this country were obtained by Warszewicz 

 in the Cordillera of Chiriqui at an elevation of about 8000 feet above the sea ; these 

 were described by Gould in 1850^. It was subsequently found in Costa Rica, where 

 M. Boucard tells us it occurs in the forests at all altitudes up to an elevation of 10,000 

 feet''. Its peculiar cry renders it easily detected in the forests which it frequents. 

 Unlike C. ornatus of the Amazons valley, C. glabricollis appears to be strictly confined 

 to the high mountains, and this is probably the reason it does not occur in the low- 

 lands bordering the Panama Railway, and why its northward extension is determined by 

 the valley of the San Juan river. 



Suborder TRACHEOPHONiE. 

 Pam. DENDROCOLAPTID^*. 



Within our limits we are more or less acquainted with about forty-six species of 

 Dendrocolaptidse, the total number contained in the family being about 300. The focus 

 of the family is probably the great basin of the Amazons river ; but its members as a 

 whole are by no means confined to the forests of the more tropical countries of South 

 America, for the large section or subfamily of the Fumariinae belongs chiefly to the 

 southern portions of the continent, to the arid districts bordering the Pacific Ocean, 

 or to the highlands of the Andes throughout their length. This subfamily is not 

 represented in Central America. 



The other subfamilies of Mr. Sclater's arrangement (Cat. Birds Brit. Mus. xv. p. 3) 

 are: — 



* The DendrocolaptidaB forms another of the characteristic families of South- American birds, and is strictly 

 confined to the Neotropical Eegion, with the exception of the Antilles, where no representative is found. 



BIOL. CENTK.-AMER., Aves, Vol. II., July 1891. 19 



