1917.] Chapman, Distribution of Bird-life in Colombia. 473 



(3066) Empidonax virescens ( VieilL). 



Platyrhynchus virescens Vibill., Nouv. Diet. d'Hist. Nat., XXVII, 1818, p. 22 

 (near Philadelphia, Pa.). 



EmpidonaxvirescensJiEiAM., P. Z. S., 1911, p. \13Q (Pueblo Rico; Sipi); Allen, 

 Bull. A. M. N. H., XIII, 1900, p. 143 (Bonda; Valparaiso). 



Taken only west of the Central Andes. December specimens are much 

 yellower below than those taken in February and March. 



Juntas de Tamana, 2, Dec. 18, 20; Los Cisneros, 1, Mch. 20; Las 

 Lomitas, 3, Feb. 27-Mch. 6; San Antonio, 2, Feb. 16, 21; Rio Frio, 1, 

 Nov. 24; Puerto Valdivia, 1, Dec. 14. 



(3064a) Empidonax trailli alnorum Brewst. 

 Empidonax traillii alnorum Bbbwst., Auk, XII, 1895, p. 161 (Upton, Me.). 



Found only in the Tropical Zone. Two of our specimens might as 

 readily be referred to trailli as to alnorum, and few represent the extreme 

 type of alnorum, but the series as a whole is nearer to alnorum than to trailli. 



Dabeiba, 1, Feb. 26; Turbaco, 1, Aug. 15; Calamar, 2, Nov. 4, Jan. 21; 

 Puerto Berrio, 1, Jan. 29; Honda, 3, Feb. 6-8. 



(3069) Myiochanes ardosiacus ardosiacus {Lafr.). 



Tyrannula ardosiaca Lafr., Rev. Zool., 1844, p. 80 (Colombia). 



Contopus ardesiacus Scl. & Salv., P. Z. S., 1879, p. 515 (Medellin; Sta. Elena) . 



Inhabits the Subtropical Zone of all three ranges. I can detect no 

 racial differences. 



Paramillo Trail (10,000 ft.), 1; San Antonio, 2; Cerro Munchique, 1; 

 Gall era, 1; Ricaurte, 2; Buena vista, Narino, 1; Sal en to, 1; Rio Toche, 1; 

 La Palma, 1; near San Agustin, 2; La Candela, 2; Fusugasuga, 4; Agua- 

 dita, 3; El Roble, 1; Palo Hueco, 1. 



(3071) Myiochanes virens (Linn.). 



Muscicapa virens Linn., Syst. Nat., I, 1766, p. 327 (Carolina). 

 Contopus virens Allen, Bull. A. M. N. H., XIII, 1900, p. 142 (Valparaiso; 

 Cacagualito; Sjinta Marta). 



A specimen taken at Dabeiba, one at San Agustin, May 4 (a surprisingly 

 late date), and two from Villavicencio are typical of this species. 



We have also a specimen from La Frijolera, Jan. 3, one from Salencio 



