528 NEW BIRDS FROM THE LOWER AMAZON. 



and cliauging on the fifth aud sixth to gray, tinged with vinaceous ; head, 

 neck, and under parts uniform vinaceous, the occiput inclining to gray- 

 ish (the first with a black postocular streak and auricular spot, as in 

 allied species). Length (skin) 8.40, wing o.20, tail 3.40 (graduated for 

 .70), exposed culmeu .57, tarsus .75, middle toe .82. 



Habitat. — Lower Amazon (Diamautina). 



Type, an adult male, in collection C. B. Riker, New York City. 



This is another of the group possessing fourteen rectrices (including, 

 besides the present species, Z. vinaceo-rufa Ridgw., Z. ruhripes Lawr., 

 Z. bogotensis Lawr., and Z. maculata (Vieill.). The possession of 

 fourteen rectrices by these species reduces the diflerences of structure 

 between Zenaida aud Zenaidura to mere relative length and graduation 

 of the tail, and, considering the fact that even in this respect Z. yuca 

 tanensis Lawr. is exactly intermediate between the typical species of 

 the two so-called genera, it would seem that Zenaidura is no longer ten- 

 able in a generic sense. 



A second specimen (ai>parently an adult male) agrees exactly in 

 color with .the one described above, aud measures as follows : Length 

 (skin) 8.70, wing 5.15, tail 3.00, exposed culmen .58, tarsus .85, middle 

 toe .80. 



