294 Bangs, Birds from Western Costa Rica. [£}}y 



This species is dichromatic, there being a distinctly gray and a distinctly 

 red-brown phase of plumage, having nothing to do with sex, age or season. 

 In Large series, as with most dichromatic birds, some skins intermediate 

 between the I WO phases will always be found. I cannot see any differences 

 between western Costa Riean skins and those from Panama, and if the 

 subspecies costaricensis is a valid form these Hi<> (irande specimens do 

 not represent it. One skin in my collection from Carrillo, the only one 

 I have from eastern Costa Kica, appears to be quite typical M. inornata 

 J)u Bus, and I hardly think there is room for a subspecies costaricensis. 



Trogonid.k. 



Trogon atricollis tenellus (Cab.). Twenty-five specimens, adults and 

 young of both sexes and one nestling male with wholly tawny back and 

 breast and the belly slightly paler and somewhat mixed with whitish, 

 BorUCa and PoZO del Rio (irande, April June. 



Trogon bairdi Lairr. Nineteen specimens, both sexes, Boruca and Bozo 

 del Rio < Irande, April and May. 



Trogon melanocephalus Gould'. Six specimens, both sexes, Barranca 

 Bunt arenas, August. 



Trogon caligatus caligatus Qould. Seventeen specimens, both sexes, 

 Boruca, Barranca and Barranca I'unt arenas, May, June and August. 



Trogon massena Could. Four adult males, Boruca and Bozo del Rio 

 (Irande, April, May and August. 



MOMOTIDiE. 



Eumomota superciliaris australis Bangs. Four adults, both sexes, 

 Barranca Buntarenas, Augusl and January, 1905. Three of the four speci- 

 mens were taken during a few days spent by 1'nderwood at this place, in 

 January, L905, and are included here with the other collection. All are 

 like the (wo original skins from Bebedero upon which 1 based the sub- 

 species. 



Momotus lessoni Less. Five specimens, adults of both sexes, and two 

 young in nestling plumage, which is similar to the adult plumage except 



in lacking the bunch of black feathers on the chest, Boruca, Pozo del Rio 

 (Irande and Barranca I'untarenas, April, May and August. 



AlCEDINIDjE. 



Ceryle torquata torquata (Linn.). Four adults, both sexes, Paso Real, 

 Pozo del Rio (irande and Barranca Buntarenas, April, July and August. 



Ceryle amazona (Lath.). One adult male, Bozo del Rio Grande, April. 



Ceryle americana septentrionalis Skarpe. Nine specimens, both sexes, 

 Boruca, Lagato and PoZO del Rio (irande. April-August. 



Asionid.k. 



Pulsatrix perspicillata (Lath.). Two specimens, male and female, 

 Pozo del Rio (irande, April. 



