: P.N.E.Z.C. 
18 THAYER AND BANGS—A NEW THRASHER Vol. IV 
marked; rest of under parts much paler, the belly varying from almost 
buff in some individuals to dull ochraceous buff, the sides and flanks much 
less brownish. 
MEASUREMENTS (in millimeters) 
of six adults taken at Rosario. 
No. Sex Wing Tail Tarsus Culmen 
6000 (type) g 8). 135.0 33. 38. 
6001 Q 100. 134.0 35. 36. 
6002 2 96. 134.0 33. 35. 
6003 oe 102. 133.5 34. 38. 
6004 aH 103. 142.0 35. 37. 
