456 Bulletin American Museum of Natural History. [Vol. XXXVI, 



(2951) Elaenia pudica brachyptera Bert. 



Elcenia brachyptera Berl., Proc, IV, Int. Om. Cong., 1907, p. 407 (San Pablo, 

 w. Col.). 



A series of birds from southwestern Colombia occupies the range 

 assigned to this species, and in color differs from Elcenia griseigularis as 

 brachyptera is said to differ from it. Our males, however, have the wing 

 ranging from 71 to 74 mm. instead of from 56.5 to 69.2 mm., the measure- 

 ments given by von Berlepsch; but Hartert (Nov. Zool., V, 1898, p. 487) 

 records four males from Ecuador as measuring. Wing, 79 mm. Since this 

 is the only form of Elaenia secured by us in the Subtropical Zone of south- 

 western Colombia, I assume in spite of this apparent discrepancy in size 

 that our specimens should be referred to brachyptera. 



Compared with a specimen from Marcapata, southern Peru, labelled 

 by von Berlepsch " Elcenia pallatangce," they are decidedly more olivaceous, 

 less brownish above and have black wings and tail; but the outer margin 

 of the outer pair of rectrices is usually yellowish or grayish as in pallatangce. 



We have a specimen recently collected by Richardson at Zamora in 

 southeastern Ecuador which agrees with the specimens listed below, ex- 

 cept that the outer web of the outer rectrices is of the same color as the 

 inner web. 



The distributional facts involved in connection with the close resem- 

 blance existing between the two forms, strongly suggests the conclusion 

 that brachyptera is a southern form of pudica. Both occupy the same zone, 

 pudica in its more northern, and brachyptera its more southern part; thus, 

 like representative races, one replaces the other and at no point have we 

 found them together. Aside from the fact that brachyptera has a concealed 

 white crest which pudica is without, the differences between the two birds 

 are of a purely racial nature, brachyptera being very slightly darker above 

 and somewhat yellower below. However, three specimens of pudica from 

 the northern Central Andes (Barro Blanco and Rio Toche) have a distinct 

 indication of white in the crown and to this extent approach brachyptera 

 with which I believe pudica intergrades. 



Andes w. of Popayan, 1 ; Cerro Munchique, 6 ; Florida, 1 ; Ricaurte, 2 ; 

 La Sierra, 2. 



(2955) Elaenia parvirostris Peh. 



Elainea parvirostris FsiiiZ., Orn. .Bras., 1869, pp. 107, 178 (Curytiba, Brazil). 



Five specimens from Florencia agree with four from Bermudez, Vene- 

 zuela, one of which (type of Elcenia albiventris Chapm.) has been identified 

 by von Berlepsch as parvirostris. 



Florencia, 5. 



