72 Bangs New or Rare Birds from Western Colombia. 



Syrnium nigrolineatum nigrolineatum Sclater. 



One adult 9 , La Maria, Dagua Valley, May 26, 1908. This skin is an 

 exact match for several Chiriqui specimens, and the form thus ranges 

 into western Colombia, while in the Bogota region Syrnium nigrolineatum 

 spilonotum Sharpe takes its place. 



Picumnus canus sp. nov. 



Type from Naranjito,. Rio Dagua, western Colombia. Adult $ , No. 

 23,434, Bangs collection, Museum of Comparative Zoology. Collected 

 June 20, 1908, by M. G. Palmer. 



Characters. Similar to P. olivaceus Lafr. in pattern, but slightly 

 larger and of a very different color, being whitish and gray instead of 

 olive and greenish. 



Top o>f head black with small white spots; rest of upper parts dull 

 smoke gray, wings somewhat edged with yellowish-white; belly dull white, 

 faintly striped with dusky; chest dull grayish, passing into whitish-gray 

 on throat; sides slightly tinged with pale yellowish. 



Measurements. Type, adult $, wing, 56; tail, 29.5; tarsus, 12.5; cul- 

 men, 12. 



Threnetes fraseri (Gould). 



A fine adult, sex not determined, of this Ecuadorian species was taken 

 at Naranjito, Rio Dagua, June 22, 1908. 



Xiphorhynchus rosenbergi* sp. nov. 



Type from Guabinas, Rio Cauca, western Colombia. Adult cT, No. 

 23,436, Bangs collection, Museum of Comparative Zoology. Collected 

 January 9, 1908, by M. G. Palmer. 



Characters. Nearest to X. chunchotambo (Tschudi), of which it may 

 be a subspecies, but with a much heavier bill; under parts paler; throat 

 more buffy, and striping of chest heavier. From X. nana (Lawr.), which 

 it somewhat resembles in general coloration, the new form can at once 

 be told by having the middle of back distinctly marked with pale shaft 

 lines bordered by black, by the striping of the chest being wider, the 

 stripes more distinctly bordered by black, and by the belly being less 

 indistinctly striped. 



Measurements. Type, adult (?, wing, 108; tail, 97.5; tarsus, 23; cul- 

 men, 36. 



Rhopoctites alogus sp. nov. 



Type from near Pavas, west slope of Colombia, at 4,400 feet altitude. 

 Adult cT, No. 23,438, Bangs collection, Museum of Comparative Zoology. 

 Collected February 8, 1908, by M. G. Palmer. 



Characters. Somewhat similar to R. ruftbrunneus (Lawr.) of Costa 

 Rica and Panama, but larger ; bill both longer and stouter ; colors above 



* Named for Mr. W. F. H. Rosenberg of London, who has taken much interest in 

 securing collections from this region. 



