BIRDS OF NORTH ANB MIDDLE AMERICA. 649 



Southern portion of Mexican plateau, in States of Mexico, Hidalgo 

 (Tula; Keal del Monte), Puebla (Esperanza), Oaxaca (Mitla; Cacoprieto; 

 Oaxaca City), Guerrero (Tixtla), Jalisco (Huejuquilla; Guadalajara; 

 Atemajac), Guanajuato, southwestern Durango (Durango City), south- 

 ern Sonora (Alamos), and Federal District (Tlalpam). 



Slalpinctes] obsoletus (not Troglodytes obsoletus Say) Cabanis, Mus. Hein., i, 1850, 

 79 (Mexico).— CouEs, Key N. Am. Birds, 2d ed., 1884, 275, part.— Ridgway, 

 Man. N. Am. Birds, 1887, 548, part. 



Salpinctes obsoletus Sclateb, Proc. Zool. Soc. Lond., 1859, 371 (Oaxaca).— Baikd, 

 Review Am. Birds, 1864, 110, part (Mexico).— Baikd, Beewer, and Ridgway, 

 Hist. N. Am. Birds, i, 1874, 135, part (Mexico).— Coues, Birds Col. Val., 1878, 

 159, part.— Lawbence, Bull. U. S. Nat. Mus., no. 4, 1876, 13 (Cacoprieto, 

 Oaxaca).— Salvin and Godman, Biol. Centr.-Am., Aves, i, 1880, 71, part 

 (Guanajuato; Mexico; Oaxaca).— Shaepe, Cat. Birds Brit. Mus., vi, 1881, 

 266, part (Puebla; Mexico). — American Oenithologists' Union, Check List, 

 1886, no. 715, part. 



ISaXpiTictes'] obsoletus Sclater and Salvin, Nom. Av. Neotr., 1873, 6, part. 



Salpinctes obsoletus notius Ridgway, Proc. Biol. Soc. Wash., xvi, Nov. 30, 1903, 168 

 (Tlalpam, Federal District, Mexico; coll. U. S. Nat. Mus.). 



Note. — ^The name Troglodnjtes latifasciatus Lichtenstein (Preis-Verz. 

 Mex. Vfig. , 1830, 2 "), has usually been cited as a synonym of Salpinctes 

 obsoletus, and if really intended for this species would of course be 

 available for the present form; but the \evy brief description certainly 

 does not afford sujEcient reason for such identification, and therefore, 

 in the absence of any type specimen (which, according to Salvin and 

 Godman, seems to have disappeared), I am unable to discover the 

 slightest excuse for adopting the name in question. In fact, it would 

 have been better had the majority of the new names of this much-cited 

 paper been ignored, as the reward for the author's carelessness. 



SALPINCTES OBSOLETUS PULVERIUS Grinnell. 

 SAN OTOOIAS ROCK WREN. 



Similar to S. o. obsoletus, but with larger and relatively stouter bill 

 and much paler, more buffy coloration (general color of upper parts, 

 in summer plumage, pale buffy broccoli brown or pale grayish wood 

 brown). 



Adult male. — Length (skin), 136.5; wing, 71; tail, 51; exposed cul- 

 men, 20; tarsus, 21.5; middle toe, 14.5.* 



« I have not been able to refer to the original paper, but in the reprint in Journ. 

 fiir Orn., 1863 (p. 57), the name is given as latisfasciatus, not latifasciatus, as usually 

 cited. 



* One specimen, the type. Mr. Grinnell gives average measurements of eight speci- 

 mens (sexes not separated) aa follows (his figures being converted into millimeters): 



Length (before skinning?), 152.4; wing, 69.8; tail, 55.1; culmen (exposed?), 18.3; 

 depth of bill at nostril, 4.3; tarsus, 21.6. 



