1917.] Chapman, Distribution of Bird-life in Colombia. 279 



(995) Androdon sequatorialis GovM. 



Androdon CBquatorialis Gould, Ann. and Mag. Nat. Hist., Ser. 3, XII, 1863, p. 247 

 (Ecuador); Scl. & Salv., P. Z. S., 1879, p. 528 (Remedios); Hellm., P. Z. S., 1911, 

 p. 1176 (Sipi; Tad6). 



Inhabits the Tropical Zone of the Pacific coast and eastward, into the 

 Magdalena Valley. Two specimens from "Ecuador" in the Elliot collec- 

 tion, one of which is labeled "a type," have both mandibles strongly hooked 

 and more strongly toothed than in any one of our Colombian specimens. 

 In the latter indeed, the mandibular hook is absent in the adult males as 

 well as females. Possibly these differences may be of racial value, but the 

 proximity of Barbacoas, Col., to the probable type-locality of this species 

 (Tropical Zone west of Quito) and the agreement of our Barbacoas speci- 

 mens with those from farther north, argues against the variation in question 

 being geographical. Further material is needed, however, to solve this 

 interesting problem. 



Juntas de Tamana, 2; Novita, 2; Noanama, 1; Bagado, 1; Barbacoas, 

 6. 



(999) Threnetes cervinicauda Gould. 



Threnetes cervinicauda Gould, P. Z. S., 1854, p. 109 (Quijos, Ecuador). 



Found by us only in the Tropical Zone of Amazonian Colombia. 

 Florencia, 1; La Morelia, 1. 



(1000) Threnetes ruckeri fraseri {Gould). 



Glauds fraseri Gould, Mon. Trochil., I, 1861, pi. 12 (Esmeraldas). 

 Threnetes ruckeri {sic) Boucard, Hummingbird, 1895, V, p. 7 (Rio Dagua). 

 Threnetes fraseri Bangs, Proc. Biol. Soc. Wash., XXIII, 1910, p. 72 (Naranjito). 

 Threnetes ruckeri fraseri Hellm., P. Z. S., 1911, p. 1177 (N6vita). 



Inhabits the Tropical Zone of the Pacific coast. Our six specimens from 

 Barbacoas agree with nine others from western Ecuador, including six 

 topotypes from Esmeraldas. Seven specimens from eastern Panama (El 

 Heal; Cupe River; Capeti) while nearer /rasm, indicate, as Hellmayr {I. c.) 

 has already surmised, the intergradation of fraseri with ruckeri of western 

 Panama, Costa Rica and Nicaragua. The east Panama form has the cin- 

 namon throat-patch brighter and more extensive, the Underparts paler, the 

 tail greener than in fraseri and thus very appreciably approaches rv/>keri. 

 Two specimens from the Canal Zone while resembling Costa Rica birds 

 below have the back green with little or no brassy reflection and thus 

 .approach fraseri. 



Barbacoas, 6. 



