348 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



(11.43); depth of bill at base, 7.37-7.62 (7.49); tarsus, 20.83-22.86 

 (22.10); middle toe, 13.97-15.49 (14.73).' 



Highlands of Central America and northwestern South America; 

 north to Chiapas, southern Mexico (San Cristobal, Pinabete, near 

 Comitan, etc.), south to Peru (Lima, etc.).^ 



Pyrgita peruviana Lesson, Rev. Zool., 1839, 45 (Lima, Peru). 



Brachiixp'tza capensis peruviana Ridgway, Auk, xv, Oct., 1898, 321 (crit.; Peru to 

 a. Mexico).— Bangs, Proc. Biol. Soc. Wash., xii, 1898, 178 (San Miguel, 

 prov. Santa Marta, Colombia) ; Proc. New Engl. Zool. Club, i, 1899, 79 (San 

 Sebastian and El Mamon, prov. Santa Marta). 



'^Pyrgita peruviensis Less[on], Inst. no. 72, pi. 316, 3." 



Zonotrichia pileata (not Emberiza pileata Boddaert) Sclater, Proc. Zool. Soc. 

 Lond., 1859, 140 (Pallatanga, w. Ecuador); 1860, 76 (Panza, Chimborazo, 

 Ecuador) ; Cat. .^m. Birds, 1862, 113, part (Cuenca, w. Ecuador; Bogota, 

 Colombia). — Sclater and Salvin, Ibis, 1859, 18 (Duenas and plains of 

 Antigua, Guatemala) ; (?) Proc. Zool. Soc. Lond., 1868, 569 ( w. Peru) ; 1879, 

 507 (Retire, Envigado, and Jledellin, prov. Antioquia, Colombia) . — Cabanis, 

 Journ. fiir Orn., 1860, 411 (Costa Rica). — Lawrence, Ann. Lye. N. Y., ix, 

 1868, 103 (San Jos6, Costa Rica).— Frantzius, Journ. fiir Orn., 1869, 301 

 (Costa Rica) .— Salvix, Proc. Zool. Soc. Lond., 1870, 190 (Volcan de Chi- 

 riqui; Chitra, Calovevora, and Castillo, ^^eragua) ; (?) 1883, 422 (Coquimbo, 

 w. Peru); Cat. Strickland Col, 1882, 230 (Guatemala); Novit. Zool., ii, 

 1895, 7 (Cajamarca, etc., centr. Peru, alt., 8,000-10,400 ft.).— Wyatt, Ibis, 

 1871, 127, 328 (Sierra Nevada de Santa Marta, 7,000-9,000 ft.). —Nation, Proc. 



^ Eleven specimens, chiefly from southern Mexico (Chiapas) and Guatemala. 



^ In addition to 29 adults from Chiapas and Guatemala, the following adult 

 examples have been examined: From Costa Rica, 4 (3 male, 1 sex undetermined); 

 Chiriqui, 1 male; Panama, 1 female; Bogota, 1, sex undetermined; Quito, Ecuador, 

 2, sex undetermined; Lima, Peru, 2 males. After careful com.parison of the whole 

 series, I am unable to detect any differences which would justify a separation into 

 geographic forms, and therefore, for the present, or until a larger series from more 

 southern localities may make further subdivision necessary, consider them as all 

 representing a single form, for which the oldest name known to me is Pyrgita 

 peruviana Lesson. As a rule, specimens from Costa Rica and northward have the 

 black on the foreneck more completely coalesced than in the few Colombian, Ecua. 

 dorean, and Peruvian specimens with which I have been able to compare them, the 

 latter, in this respect, varying toward true B. cape^isis; but they nevertheless more 

 resemble Central American specimens in this character than do the examples from 

 the more eastern portions of South America. 



Average measurements of specimens from different localities are as follows: 



Locality. 



Ex- 



^)ose 



culmen. 



Depth 

 of bill 

 at base. 



Middle 

 toe. 



MALES. 



Eight adult males from Chiapas and Guatemala, 



Four adult males from Costa Rica 



One adult male (?) from Chiriqui 



Two adult males froui Peru (Lima) 



FEMALES. 



Ten adult females from Chiapas and Guatemala. 

 One adult female from Panama 



11.94 

 11.94 

 11.43 

 11.43 



11.43 

 10.67 



7.62 

 7.11 



22. 61 

 22.86 

 22.86 

 22. 61 



22.10 

 20.83 



14.73 

 15.24 

 15.24 

 15.24 



14.73 

 14.73 



