RIKDS OF NORTH AND MIDDLK AMKIUCA. 5l7 



streakod with l»i(»\\ iiisli i;ra_v: a inorc or less distinct suldualar sli-caU 

 of black: throat and chest with hroad ovate sti-c:d<s or ol)h)rio- spots 

 of Mack, tho l)rea.st and abdomen witli linear or eloiigate-guttate 

 streaks of the same; sides. Hanks, and iindei- tail-coverts barred with 

 bhickish; maxiUa In-ownish black or diiskv with paler toniia: mandi- 

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



j^^,/;,_y._Kssentially like adults, but back streaked with pale brown- 

 ish butf on a -svholly dusky ground; paler markings of wings and tail 

 more butiy; postocular streak ])lackisli, and underparts more sparsely 

 s])otted, and without distinct bars on Hanks. 



Adult ;//Y//6^.— Length (skins), 172-108 (181); wing, OU-TT (U.l); 

 tail, tU.5-77 (71.1); exposed culmen, 22-29 (25); tarsus, 25-27 (25.9); 

 middle toe, 17-20 (18.5). 



Adult /6;/i///t'.— Length (skins), 105-188 (175); wing, 70.5-72.5 

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

 2-1-27 (25.4); middle toe, 18-19 (18.2).^ 



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



Thryothoru.s gitftatus Gould, Proc. Zool. Soc. Lond., 1886, 89 (Mexico; coll. 

 J. Gould). 



Campylorhijnchus (juttatus L.vfkesn.we, Eev. Zool., ix., 1846, 94.— B.\nu), Review 

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

 and Celestin, Yucatan).— S.\lvix and Goom.w, Biol. Centr.-Ani., Aves, i, 

 1880, 68.— Sh.\rpe, Cat. Birds Brit. Mus., vi, 1881, 202. 



C[amp;iIorlniiie/ias'] guthifm Grw, Gen. Birds, i, 1847, 159. 



[Cani/>!ilor]iiinchns] guHatus Box.\i'.vrte, Consp. Av., i, 1850, 22:).— Gk.w, Hand- 

 lint, i, 1869, 192, no. 2649. — Sclater and Salvix, Norn. Av. Neotr., 187:^, 5. 



HELEODYTES BRUNNEICAPILLUS BRUNNEICAPILLUS ( Lafresnaye ). 



GUAYMAS CACTUS WREN. 



Adtdts {sexes alH-e).—Vi\cuu\ and hindneck plain deep brown (vary- 

 ing from sepia to Vandyke), th(^ feathers slightly darker centrally; 

 back, scapulars, and nunp 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 gray, 

 rather broadly, ])ut more or less irregularly, barred with dusky, 

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



« Nine specimens. 



'' Eight specimens. 



f 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 i)rescnt only as small guttate or 

 ilrop-shaped spots. According to the material before mc, tliesi" extreme variations 

 are shown among specimens from any locality. 



