660 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Caiherpes mexicanus Cooper, Orn. Cal., 1870, 66 (San Joaquin Valley; Calaveras 

 and Cosumnes rivers). 



Caiherpes mexicanus var. conspersus (not of Ridgway) Henshaw, Rep. Orn. Spec. 

 Wheeler's Surv., 1876, 231 (Walker's Basin, s. California). 



Caiherpes mexicanus, ft. conspersus Ridgway and Belding, Proc. U. S. Nat. ]\lus., 

 i, 1878, 402 (Murphys, Calaveras Co., California, Feb., Mar.). 



Caiherpes mexicanus conspersus Coues, Birds Col. Val., 1878, 164, part; Check Lii^t, 

 2d ed. 1882, no. 67, part.— Ridgway, Nom. N. Am. Birds, 1881, no. 59(i, 

 part. — American Ornithologists' Union, Check List, 1886, no. 717a, part. — 

 TowNSEND (C. H.), Proc. U. S. Nat. Mus., x, 1887, 226 (Baird and Mount 

 Shasta, n. California; habits; notes). 



Caiherpes conspersus Belding and Ridgway, Proc. U. 8. Nat. Mus., i, 1879, 391 

 (Calaveras Co., California). 



Catherpes mexicanus punctulatus Ridgway, Proc. U. S. Nat. Mus., v, Sept. 5, 1882, 

 343 (Forest Hill, Placer Co., CaHfornia; coll. U. S. Nat. Mus.); Bull. Nutt. 

 Orn. Club, vii, 1882, 257. — Reichenow and Schalow, Journ. fiir Orn., 1884, 

 422 (reprint of orig. descr. ). — American Ornithologists' Union, Check 

 List, 2d ed., 1895, no. 717b, part. — Grinnell (J.), Pub. 2, Pasadena Acad. 

 Sci., 1898, 48 (Los Angeles Co., California; resident); Pacific Coast Avi- 

 fauna, no. 3, 1902, 68 (Mount Diabolo, Mount St. Helena, and w. slope Sierra 

 Nevada).— Fisher (W. K.), Condor, ii, 1900, 138 (Mount St. Helena, Napa 

 Co., California). — Barlow, Condor, ii, 1900, 133 (near Berryessa, Santa 

 Clara Co.; resident). — Mailliard, Condor, iii, 1901, 126 (San Benito Co., 

 California, resident). — Obeeholser, Auk, xx, 1903, 197 (diagnosis; range). 



Clatherpes'] mlexicanus} punctulatus Coues, Key N. Am. Birds, 2d ed., 1884, 

 276.— Bailey (Florence M.), Handb. Birds W. U. S., 1902, 445, part. 



Clatherpes} mexicanus punctulatus Ridgway, Man. N. Am. Birds, 1887, 549, foot- 

 note, in text. 



CATHERPES MEXICANUS POLIOPTILUS Oberholser. 

 INTERMEDIATE CANYON WREN. 



Variously intermediate in size and coloration between C. m. con- 

 sj^ersus on the one hand and O. ni. mexicanus and C. rii. aJhifrons on 

 the other, specimens from Texas and New Mexico connecting the first 

 and last named being slightly paler, those from Arizona, southern 

 California, Lower California, Sonora, and Chihuahua, connecting the 

 first and second, being darker. Measurements vary as follows: 



SPECIMENS FROM TEXAS AND NEW MEXICO. 



Adult male.— l^^ngih (skins), 131-140 (136.3); wing, 60-67(62.7); 

 tail, 50.5-58 (55.1); exposed culmen, 20-22(21); tarsus, 18-20.5 (19.1); 

 middle toe, 12.5-11 (13.5). (Six specimens.) 



Adult female.— l^Qngth (skins), 128-111 (131.8); wing, 58-63.5 (60.1); 

 tail, 50.5-55.(52.1); exposed culmen, 10-19.5 (19.2); tarsus, 18-19 

 (18.3); middle toe, 12.5-11 (13.2). (Six specimens.) 



SPECIMENS FROM ARIZONA. « 



Ad/>dtmale.—'hQngi\i (skins), 119-131 (126.3); wing, 57-63(60.1); 

 tail, 19-56(52.1): exposed culmen, 19-21 (20.1); tarsus, 16.5-19(17.8); 

 middle toe, 12.5-14 (13.2). (Ten specuncns.) 



« A considerable number of Arizona specimens, which I am unable to distinguish 

 from C. m. conspersus, are excluded here. 



