AveusT, 1916. NEw Sours AMERICAN Birps — Cory. 343 
tail markings, especially the middle feathers. The type also agrees 
with adults in lacking the buffy marking on the nape, which is present 
in young birds of luteientris. 
Myiarchus tyrannulus pallescens subsp. nov. 
Type from Jua, Cearé, Brazil. Adult male, No. 48803, Field 
Museum of Natural History. Collected by R. H. Becker, August 21, 
1913. 
Similar to M. t. tyrannulus, but belly somewhat paler yellow and 
breast much paler ashy; throat ashy white, the middle portion almost 
white. Back much paler than in M. ¢. bahie, and more grayish olive 
than in M. ¢. tyrannulus; outer tail feather with a very faint trace of 
pale rufous bordering the inner web. 
Wing, 92; tail, 90; bill, 20 mm. 
Pachyrhamphus niger tobagensis subsp. nov. 
Type from Tobago Island, West Indies. Adult male, No. 21016, 
Field Museum of Natural History. Collected by W. W. Brown, May 
9, 1892. 
Intermediate in coloration between P. n. niger and P. n. cinereiven- 
tris; darker than the latter (compared with specimens from Santa Marta, 
Colombia and northern Venezuela) and much more grayish (less 
blackish) on the under parts than P. n. niger. 
Wing, 76; tail, 60; bill, 13 mm. 
The female is paler and more grayish than the females of either niger 
or cinereiventris and the wing coverts are tipped with white. 
For many years I have been satisfied that the Tobago form of this 
bird should be subspecifically separated from birds from Trinidad and 
the mainland, but having only a single female I hesitated to do so. An 
examination of a male, however, still further confirms my belief, and on 
comparing it with large series of typical P. n. niger and P. n. cineret- 
ventris I am convinced that the Tobago bird is worthy of subspecific 
recognition. 
Polioptila livida cearensis subsp. nov. 
Type from Jua, near Iguatu, Cear4, Brazil. Adult male, No. 49127, 
Field Museum of Natural History. Collected by R. H. Becker, August 
I, 1913. 
Approaches nearest to P. 1. leucogaster in coloration of wpper parts 
and head marking, but throat and under parts are white, tinged with 
