TROGLODYTES. 553 



a 1 . Tail more than three-fourths as long as wing. (Subgenus Troglodytes.) 

 b l . Exposed culmen equal to or longer than middle toe, with claw. 



c 1 . Flanks plain dull white, like rest of lower parts, and lower tail-coverts 

 very slightly, if at all, barred ; above dull grayish brown, the wings 

 and tail very distinctly barred with dusky ; superciliary stripe and 

 entire lower parts dull white, the latter tinged laterally with pale 

 buffy brownish ; length about 4.50, wing 1.90-2.04 (1.95), tail 1.72- 

 1.85 (1.82), exposed culmen .60-.64 (.62), tarsus .70-.81 (.76). Hob. 



Socorro Island, western Mexico. 



T. insularis BAIKB. Socorro Wren. 1 



c 2 . Flanks pale brown or fawn-color, usually indistinctly barred with 

 darker; lower tail-coverts very distinctly barred with dusky; 

 above dull grayish brown anteriorly, passing gradually into a de- 

 cidedly more reddish, or burnt-umber, tint on rump, wings, and 

 tail, the two last barred with dusky ; lower 'parts nearly pure white 

 (quite pure on throat), except as described above ; an indistinct 

 pale brownish superciliary stripe ; length about 5.00, wing 2.10- 

 2.20, tail 1.85-1.90, exposed culmen .60-.68, tarsus .80-.85. Hab. 



Cozumel Island, Yucatan. 



T. beani KIDGW. Cozumel Wren. 2 



6 2 . Exposed culmen decidedly shorter than middle toe, with claw. 

 c 1 . No distinct superciliary stripe. 



d l . Lower parts dull white, or dull brownish white, the sides and 

 chest usually tinged with pale grayish brown, and often slightly 

 barred with darker. Nest in cavities, usually in holes of trees, 

 often in " odd nooks and corners" about buildings, composed of 

 dried twigs, and various sorts of "rubbish," lined with soft 

 feathers, etc. Eggs 5-7, pinkish white, light vinaceous, or 

 pinkish cream-color, thickly (usually minutely and densely) 

 speckled or sprinkled with reddish brown, the prevailing color 

 usually nearly uniform vinaceous, with a more or less distinctly 

 deeper colored wreath round larger end. 



e l . Above dull umber-brown, more rusty on rump and tail, the 

 back usually without distinct darker bars (often entirely 

 uniform) ; -length 4.25-5.25, wing 1.90-2.15 (2.02), tail 1.72- 

 2.08 (1.85), exposed culmen .46-.52 (.49), bill from nostril 

 .32-.S7 (.34), tarsus .60-.70 (.65). Eggs .65 X -50. Hab. 

 Eastern United States and southern Canada, west to Mis- 

 sissippi Valley (Michigan to Louisiana), wintering in more 

 southern portions... 721. T. aedon YIEILL. House Wren. 

 e*. Above grayish brown, the rump and tail more decidedly 

 brown, but not distinctly rusty, the back usually dis- 

 tinctly barred with darker; length 4.25-5.25, wing 2.00- 



1 Troglodytes insularis "BAiRD, MS." LAWR., Ann. Lye. N. Y. x. 1871, 3. 



2 Troglodytes beani RIDGW., Deser. N. Sp. B. Cozumel, Feb. 26, 1885, 1. 



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