CHESTNUT-BACKED TITMOUSE. 373 
white, the lower tail-coverts tinged with chestnut. Wings and tail 
brownish-grey, the smaller coverts tinged with chestnut, the secondary 
coverts margined and tipped with greyish-white, of which colour also 
are the outer edges of the quills, except the first ; tail feathers faintly 
margined with bluish-grey. 
Length to end of tail 43 inches ; wing from flexure 28; tail 113; 
bill along the ridge #5; tarsus #4; hind toe #4, its claw 7; middle 
4 | 23 
toe #4, its claw 2%. 
Adult Female. Plate CCCLIII. Fig. 2. 
The Female is similar to the male. 
