FEB., 1915. NEW SOUTH AMERICAN BIRDS CORY. 297 



Cerchneis sparverius distincta subsp. nov. 



Type from Boa Vista, Rio Branco, Brazil. Adult male, No. 47128, 

 Field Museum of Natural History. Collected by M. P. Anderson, 

 November 27, 1912. 



Nearest to C. s. isabellina of British Guiana in coloration of 

 under parts and tail feathers, but wings and tail longer and crown 

 much paler gray. 



Back ochraceous cinnamon rufous, more cinnamon rufous than in 

 peruviana. Crown ashy gray and without streaks; chest pale ochraceous 

 tawny, becoming whitish on the abdomen and buffy white on the 

 flanks and under tail coverts; under parts unspotted; under wing 

 coverts white, without black spots (some specimens show a few small 

 blackish spots on the extreme inner portion); outer web of outer tail 

 feather white (some specimens have very narrow black streaks border- 

 ing the shaft) ; inner web of outer tail feather largely rufous, shading to 

 whitish towards .the edge, with one black subterminal band, the tip 

 white; tips of all except the outer tail feathers white in the middle, 

 bordered with rufous. 



Wing, 182; tail, 130; tarsus, 33 mm. 



Average measurements of four males: Wing, 181; tail, 130 mm. 



Cerchneis sparverius margaritensis subsp. nov. 



Type from Margarita Island. Adult male, No. 38814, Field. 

 Museum of Natural History. Collected by J. F. Ferry, February 20, 

 1909. 



Breast and more or less of abdomen tawny buff (darker and more 

 strongly colored than in C. s. distincta or isabellina); lower abdomen 

 and flanks much paler, being merely tinged with buff; under parts 

 without black spots (some specimens have a few spots on the sides, 

 which are concealed when the wing is closed); under wing coverts 

 white, with a few black spots largely confined to the inner portion; 

 back vinaceous cinnamon rufous, approaching in color that of C. s. 

 brevipennis; inner web of outer tail feather dull white, with several 

 black bands (four in the type specimen) ; outer web of outer tail, feather 

 whitish, with narrow black streaks bordering the shaft. 



Wing, 170; tail, 129; tarsus, 32 mm. 



The length of the wing, paler under parts and much less marked 

 under wing coverts will distinguish this form from C. s. brevipennis; 

 and the coloration and markings of the outer tail feather and deeper 

 colored under parts will distinguish it from C. s. isabellina. From 

 C. s. distincta it differs in its much darker crown; deeper colored under 



