144 



NOKTII AMKUICAN lilKD.S. 



soiuH are more nhloii^' than otluTs. Their length varies tnnii .7.") to .7(> of an 

 inch, ami their j;reatest hreadth from JiU to .»).'>. The ground -color is a red- 

 dish-white, ijrot'usely covered with blotches of purple, slate, reddish-brtiwn, 

 and red. These are genemlly and j)retty etiually ditliised, and are not more 

 abundant at the lai-ger end than elsewhere. 



Thryothorus ludovicianus, var. berlandieri, cnrcH. 



BSBLAVDIER'S WBEH. 



Thrf/ofhorm hrhindifri, C'orni, R\iiti>, Birds N. Am. 185», 362, pi. Ixxxiii, tig. 1 (New 

 \a'o\\) ; Ktv. 1J4. 



Sp. Chak. Kx[»os('»1 itoition of l>ill lu-.-irly as loiiir as the lu-ad. Abovf dark rusty- 

 browii, most vivid on the ruiup. A whitish streak over the eye, bordered above with 

 brown. Chin white ; rest of under parts dark brownish-red: the un<ler tail-eoverts and 

 sides of the bo<ly barred with dusky. F^xposcd surface of wings and tail V)arred throujjh- 

 out with dusky. Lejrs tlesh-eolor. Lenjrth, 5.*J") ; wing, 'J/Jo ; tail, 2.12. 



IIab. Valley of Kio Grande. 



The distinctive features of this race will be found indicated on page 141. 

 This form bears to the T. itK/oriritniits about the same relation that Harpo- 

 rht/nchus lowjiroatris does to H. rufus ; and is hardly to be considered a dis- 

 tinct " species " from it. It should be noted that in both cases the length- 

 ened bill and deej)er color l)elong to the Kio Grande. It has not yet been 

 met with north of tlie Kio Urande, but doubtless extends into Texas. Noth- 

 ing is known of its habits. 



SuBGExus THR70MANES, Sclat. 



Thn/nimnns, Sclateu, Catal. Am. Birds?, 1861, 21. (Type Trofjlodtjtcs bewickii.) 



There are three strongly marked geographi- 

 cal varieties of ' Bewick's Wren," separable 

 by quite constant characters. Of these the 

 Alexican (leftwf/astcr) and the typical form 

 from eastern North America (bnrirh'i) dififer 

 most in coloration, while the western (spiia' 

 ru.s) is intermediate in this respect, but with 

 a longer bill than in the other two. The ])e- 

 culiarities of the three forms are expressed 

 on page 141. 



Thryothorus bewickiL 



