1917.] Chapman, Distribution of Bird-life in Colombia. 421 



Inhabits the Tropical Zone of the Pacific coast. After comparison of 

 our Colombian series with four Panama specimens of lachrymosus, includ- 

 ing the type, I find no ground for the separation of a west Colombian form. 



Baudo, 1; No vita, 1; Novita Trail (2000 ft.), 1; Noanama, 2; Dabeiba, 

 2; Alto Bonito, 5; San Jose, 1; Barbacoas, 4. 



Table of Measurements. 



Sex Wing Tail Culmen 



Panama — 119 92 40 



37 



40 



Truando c? 113 85 37 



Baudo 9 113 95 35 



Noanamd cf 124r-5 102 . 41 



& 126 105 40 



N6vita 9 119 97 40 



SanJos6 9 115 91 39 



,Barbacoas cT 122 97 40 



" c? 118 113 40 



■ " cf 111 97 40 



(2544a) Xiphorhynchus lachrymosus alarum Chapm. 



Xiphorhynchus lachrymosus alarum Chapm., Bull. A. M. N. H., Vol. XXXIV, 

 1915, p. 642 (Puerto Valdivia, Col.). 



Char, subsp. — Similar to X. I. lachrymosus (Lawr.), but buffy guttate spots 

 on the back smaller and narrowly margined with black and more widely with Dresden- 

 brown rather than broadly margined with black; spots below averaging smaller; 

 lesser wing-coverts with much less black, the outer greater coverts margined "exter- 

 nally with brownish above instead of black. 



Inhabits the Tropical Zone of the lower Cauca River and doubtless 

 also the adjoining areas on the Magdalena Valley. 

 Puerto Valdivia, 12. 



' ' (2545a) Xiphorhynchus nanus nanus {Lawr.). 



Dendrornis nana Lawr., Ibis, 1863, p. 181 (Lion Hill, Panama; type examined); 

 Allen, Bull. A. M. N. H., XIII, 1900, p. 157 (CacaguaUto) . 



Inhabits the Tropical Zone in the Atrato, Cauca, and Magdalena Val- 

 leys. Specimens from the Magdalena Valley average paler than those from 

 Rio Frio and the Atrato, but the difference is fully covered by a series of 

 specimens from the Panama Canal Zone, including the type. 



Atrato River, 2 ; Rio Frio, 4; Manuelita, 1; Puerto Berrio, 2; Opon, 1; 

 Honda, 1. 



