THRYOTHORUS. 549 
75 (.69), tarsus .70-.80 (.77), middle toe .55-.62 (.60). Hab. Mexico; 
southern Texas.. 717. C. mexicanus (Swarns.). White-throated Wren. 
W’. Smaller and lighter colored; above varying from dull brown to cinnamon- 
grayish, the wings cinnamon-rusty, narrowly barred with dusky ; black 
bars on tail narrower, those on outer feather usually less than .05 wide; 
Jength about 5.50-5.75, wing 2.20-2.40 (2.32), tail 2.00-2.40 (2.14), ex- 
posed culmen .70-.85 (.76), bill from nostril .50-.66 (.58), tarsus .65-.72 
(69), middle toe 48-58 (51). Eggs .70 x .52. Hab. Southwestern 
United States, north to Wyoming, southern Idaho and Oregon, and 
northern California, east to western Texas, Colorado, ete., south to 
Mexican boundary and Lower California. (Resident throughout.) 
717a. C. mexicanus conspersus Ripew. Cation Wren! 
a’. Larger (exposed culmen 1.10, tarsus 1.15); chin and throat pale tawny brown, 
chest brighter tawny brown or russet; upper parts plain dark vandyke- 
brown, becoming nearly black posteriorly and on wings, the latter without 
distinct bars or other markings ; posterior lower parts deep bistre or vandyke 
(nearly black on thighs and flanks), the belly speckled with white; wing 
2.80, middle toe .90. Hab. Southeastern Mexico (Mata Bejuco, Vera Cruz). 
C. sumichrasti Lawr. Sumichrast’s Wren.? 
Genus THRYOTHORUS Vierttor. (Page 540, pl. CKXI., figs. 3, 5.) 
Species. 
Common Cuaracters.—Above plain brown (rump sometimes with concealed 
white spots), the tail barred, more or less distinctly, with dusky; a sharply defined 
superciliary stripe of white or buffy ; color of lower parts very variable. Young 
not essentially different from adults. Nest bulky, composed of sticks, spiders’ 
webs, feathers, etc., built in some cavity, as a hole in stump or hollow tree, various 
odd nooks in buildings, etc. Hggs whitish, more or less speckled. 
a’. Feathers of ramp with very distinct concealed white spots. 
b Tail-feathers rusty brownish, narrowly barred for entire length with dusky 
and lighter rusty. (Subgenus Thryothorus, part.) 
c’. Smaller and lighter colored; above rusty brown (varying much in 
shade), duller on top of head, brighter on rump; an indistinct 
blackish line along each side of crown, bordering the white or 
buffy superciliary stripe; wings narrowly and indistinctly barred 
with dusky, the quills with pale rusty or rusty whitish spots; 
1Specimens from Colorado, Utah, Nevada, and other parts of the arid interior region alone constitute the 
true C. conspereus ; examples from California, Lower California, Arizona, and New Mexico are much darker 
(being in coloration more like the true C. meaicanus), the difference being very marked and, so far as the large 
number of specimens now before me are concerned, quite constant. The latter constitute the C. mexicanus 
punctulatus Ripew. (Proc. U. 8. Nat. Mus. v. Sept. 5, 1882, 343), a race which will probably, in due time, be 
generally recognized. ; 
2 Catherpes eumichraati Lawr., Pr. Ac. Nat. Sci. Phil. 1871, 233. 
