BIRBS OF NOETB AND MIDDLE AMERICA. - 5l7 



atreaked with brownish gray; a more or less distinct submalar streak 

 of black; throat and chest with broad ovate streaks or oblong spots 

 of black, the breast and abdomen with linear or elongate-guttate 

 streaks of the same; sides, flanks, and under tail-coverts barred with 

 blackish; maxilla brownish black or dusky with paler tomia; mandi- 

 ble pale horn color (in dried skins); legs and feet horn color. 



Young. — Essentially like adults, but back streaked with pale brown- 

 ish buff on a wholly dusky ground; paler markings of wings and tail 

 more buffy; postocular streak blackish, and underparts more sparsely 

 spotted, and without distinct bars on flanks. 



Adult male.— Length, (skins), 172-198 (181); wing, 69-77 (74.1); 

 tail, 64.5-77 (71.1); exposed culmen, 22-29 (25); tarsus, 25-27 (25.9); 

 middle toe, 17-20 (18.5). 



Adtdt female.— Length (skins), 165-188 (175); wing, 70.5-72.5 

 (71.7); tail, 68-72.5 (70.3); exposed culmeri, 22-27.5 (24.1); tarsus, 

 2i^27 (25.4); middle toe, 18-19 (18.2).* 



Peninsula of Yucatan (Progreso; Merida; Temax; Celestin). 



Thryothorus guttatus Gould, Proc. Zool. Soc. Lond., 18.36, 89 (Mexico; coll. 

 J. Gould). 



Campylorhynchus guttatus Lafresnaye, Rev. Zool., ix., 1846, 94. — Baikd, Review 

 Am. Birds, 1864, 108.— Lawrence, Ann. Lye. N. Y., ix, 1869, 199 (Progreso 

 and Celestin, Yucatan). — Salvin and Godman, Biol. Centr.-Am., Aves, i, 

 1880, 68.— Shaepe, Cat. Birds Brit. Mus., vi, 1881, 202. 



C[ampylorh.ynchus] guttatus Gray, Gen. Birds, i, 1847, 159. 



[Campylorhynchus'] guttatus Bonaparte, Consp. Av. , i, 1850, 223. — Gray, Hand- 

 list, i, 1869, 192, no. 2649.— Sclater and Salvin, Noin. Av. Neotr., 1873, 5. 



HELEODYTES BRUNNEICAPILLUS BRUNNEICAPILLUS ( Lafresnaye ) . 



GUAYMAS CACTUS WREN. 



Adults {sexes alike). — Pileum and hindneck plain deep brown (vary- 

 ing from sepia to vandyke), the feathers slightly darker centrally; 

 back, scapulars, and rump paler and more grayish brown, more or 

 less conspicuously variegated with white, usually in the form of gut- 

 tate, cuneate, or linear streaks, these edged, at least in part, with 

 dusky;'' upper tail-coverts and middle rectrices brownish graj^, 

 ^ rather broadly, but more or less irregularly, barred with dusky, 

 these dusky bars sometimes much broken and confused; tail (except 



o Nine specimens. 



t> Eight specimens. 



« There is a very great range of individual variation in both the general color of 

 the back, which varies from almost prouts brown to hair brown, as well as in the 

 form and extent of the whitish markings. The latter are often in the form of very 

 conspicuous broad linear streaks; again they are present only as small guttate or 

 drop-shaped spots. According to the material before me, these extreme variations 

 are shown among specimens from any locality. 



