TROGLODYTES. 



139 



Sylvia domestica, Wilson, Am. Orn. I, 1808, 129, pi. vii. 

 Troglodi/ies fidvus, Ndtt. Man. I, 1832, 422. 



Other figures : Add. Orn. Biog. 1, 1831, pi. 83.— Ib. B. A. II, 1841, pi. 120. 

 Hab. Eastern province of United States, from Atlantic to tlie Missouri River. 



Autumnal and winter specimens have sometimes a slight fulvous 

 tinge on the breast. 



As usual, southern specimens of this species are the smaller, as 

 illustrated by the following measurements. 



(28,944, % , Washington.) Total length, 4.30 ; wing, 2.02 ; tail, 2.05 ; ex- 

 posed portion of 1st primary, .74, of 2d, 1.30, of 3d, 1.50, of longest (measured 

 from exposed base of 1st primary), 1.51 ; length of bill from forehead, .60, 

 from nostril, .37, along gape, .70 ; tarsus, .66 ; middle toe and claw, .64; hind 

 toe and claw, .56 ; claw alone, .25. 



(8,641, ■£, Florida.) Fresh specimen before being skinned: Total length, 

 4.50; expanse of wings, 5.75 ; wing from carpal joint, 1.75. Prepared speci- 

 men : Total length, 4.20 ; wing, 1.80 ; tail, 1.76 ; exposed portion of 1st pri- 

 mary, .70, of 2d, 1.22, of 3d, 1.35, of longest (measured from exposed base of 

 1st primary), 1.38 ; length of bill from forehead, .61, from nostril, .39, along 

 gape, .70; tarsus, .65; middle toe and claw, .61; hind toe and claw, .50; 

 claw alone, .24. 



Troglodytes aedon, var. aztecus. 

 Troglodytes mdon, var. aztecus, Baied. 

 Hah. Eastern Mexico, from Rio Grande southward. 



In a series of Mexican Wrens before me, in addition to well 

 marked specimens of T. hypsedon and brunneicollis, I find a number 

 which I cannot distinguish satisfactorily from T. aedon. They have 

 the same proportions with aedon, as compared with parkmanni — 

 approaching the latter in a paler shade of upper plumage, in which 

 respect there is a slight diiference from aedon. In most specimens 

 there is a brownish tinge on the breast (very different, however, from 

 hypsedon) not common in the skins usually seen of aedon, but agree- 

 ing very well with autumnal skins (as 728, Carlisle, and winter skins 



