282 TIMELIIBJ;. 



Subsp. 1 (I. Catherpes conspersus. 



Troglodytes albifious, Baii-(l,in S/ansbm-i/'s Rep. p. 327 {nee Girand). 

 Troglodj'tes mexiciiuus, Ilcerm. Joitrn. Acad. Nat. Sci. Philad. 



2nd ser. ii. p. 03 ; id. Pucif. Bail. Rep. x. p. 41 ; Cussin, III. B. 



Calif, p. 173, pi. xxx. 

 Catherpes mexicauus (wee Swains?), Baird, B. N. Amer. p. 356 ; id. 



Review Amer. B. p. Ill ; Cooper, Orn. Calif, p. 66; Coues, Key 



N.-Amer. B. p. 85 ; id. B. North- West, p. 28. 

 Catherpes mexicanus, var. conspersus, Ridgw. Amer. Nat. vii. p. 2 ; 



Baird, Breicer, ^ Ridqw. N.-Amer. B. p. 139, pi. A'iii. fig. 4 ; 



Ridf/ic. Orn. 40th Para'lkl, p. 420; Cones, B. Col. Vail p. 164. 

 Catherpes mexicamis conspersus, Coues, B. Col. Vail. p. 164 ; Ridgto. 



Bull. U.S. Nat. Mus. no. 21, p. 14 (1881). 



Adult male (Black Eiver, Arizona ; H. W. Henshaw). Above 

 brownish ashj' on the anterior and bright cinnamon-rufous on the 

 posterior half, the two colours shading insensibly together on the 

 back ; the anterior or greyish portion thickly sprinkled with 

 numerous small circular dots of bufFy white, each surrounded by a 

 mall dusk}- mark ; a few of these dots on the rump, but not so con- 

 spicuous ; wing sandj' rufous, both the coverts and the quills mottled 

 with wavy bars of dusky blackish, the median and greater coverts 

 with dull white spots like the back ; the quills uniform dusky brown 

 on the inner weljs and at the tips, the inner secondaries only sandy 

 rufous mottled with dusky cross-barring ; tail pale rufous, narrowly 

 barred across with dusky blackish ; lores dull whitish ; over the eye 

 a slight eyebrow of sandy buff, as also are the feathers round the 

 eye ; cheeks white ; ear-coverts whitish, the hinder margin blackish 

 with whitish spots ; throat and chest white, sliaded with chestnut on 

 the latter ; the sides of the breast, flanks, and abdomen rich chest- 

 nut, varied with a few spots of dull white surrounded by blackish ; 

 axillaries chestnut, like the breast ; under wing-coverts dusky, with 

 whitish cross-markings ; quills light brown below, paler along the 

 edge of the inner web ; " bill slate-colour, of a pale livid hue below ; 

 feet black ; eyes brown" (Cones). Total length 4-75 inches, culmen 

 0"8, wing 2*^, tail 1'9, tarsus 1-65. (JJus. Salvin and Godman.) 



The White-throated Rock-Wren is confined to the central region 

 of North America, from the boundary of the United States north- 

 wards, extending up the Colorado valley to Western Nevada. 



The smaller size and general browner colouring seem to be the 

 chief characteristics of this race. The single specimen examined by 

 me seems hardly sufficient to settle the question : but in the above 

 respects the Arizona bird differs from Mexican examples in the 

 British Museum and in Messrs. Salvin and Godman's collection. 



2. Catherpes sumichrasti. 



Catherpes sumichrasti, Laivreiice, Pr. Acad. Nat. Sci. Philad. 1871, 

 p. 233; Sail). Sf Godm. Biol. Centr.-Amer., Aves, i. p. 74. 



Adult. Brown, witb the rump and wings darker ; sides of head a 

 little paler, the throat greyish rufous; the breast marked with 



