466 



BULLETIN 50, TJNITED STATES NATIONAL MUSEUM. 



(15. 24) ; depth of bill at base, 7.11-7. 62 (7. 37) ; tarsus, 28.19-29. 72 (28. 70) ; 

 middle toe, 17.27-20.83 (19.30).^ 



Southern Mexico, in States of Vera Cruz (Jico, Motzorongo, Cor- 

 dova, Jalapa), Mexico (Valley of Mexico), Oaxaca (Cerro San Felipe, 

 La Parada, Teotalcingo), Guerrero (mountains near Chilpancingo), 

 and Chiapas (San Cristobal, Tumbala, Pinabate), through highlands of 

 Central America to mountains of Peru and Venezuela. 



Emberimgra brunneinucha Lafkesnaye, Rev. Zool., 1839, 97 (Mexico; coll. Bost, 

 Soc. Nat. Hist.). 



E.lmbenmgra] brunneinucha Gray, Gen. Birds, ii, 1844, 361. 



Tanagra (Embemagra) brumiei-nucha Boissoneau, Rev. Zool., 1840, 68. 



IBuarremon} brunneinucha Bonaparte, Consp. Av., i, 1850, 484. — Sclatee and 

 Salvin, Nom. Av. Neotr., 1873, 24. 



B.[uarremon'\ brunndnuchua Cabanis, Mus. Hein., i, May, 1851, 141 (Colombia). 



Buarremon brunneinuchus Sclater, Proc. Zool. Soc. Lond., 1855, 155 (Bogota, 

 Colombia); 1856, 85 (monogr.), 302 (Cordova, Vera Cruz); 1858, 72 (Rio 

 Napo, e. Ecuador), 303 (La Parada, Oaxaca); 1859, 364 (Jalapa, Vera Cruz), 

 377 (Teotalcingo, Oaxaca); 1864, 174 (Valley of Mexico); Synop. Av.Tanagr., 

 1856, 23 (monogr.); Cat. Am. Birds, 1862, 90 (Bogota, Colombia; Guate- 

 mala; Jalapa, Vera Cruz). — Sclater and Salvin, Ibis, 1859, 15 (Guatemala); . 

 Proc. Zool. Soc. Lond., 1868, 627 (Caracas, Venezuela); 1875, 234 (Merida, 

 "S'enezuela) ; 1879, 504 (Concordia, Medellin, and Santa Elena, prov. Anti- 



^Five specimens (three from southern Mexico, one each from Guatemala and 

 Costa Rica). 

 Averages of specimens from different countries are as follows: 



With a series of thirty-eight adults, representing numerous localities from southern 

 Mexico to Venezuela and Peru, I am unable to detect any color-differences that can 

 be correlated with separate geographic areas. The individual variation in meas- 

 urements is very great, ana possibly marked geographic differences in this respect 

 exist, but unfortunately the number of aexed specimens is much too small to deter- 

 mine the question. The largest specimens in the series examined are from the State 

 of Chiapas, s(.)a(hern Jlexico, a district where many species exhibit a tendency to 

 acquire unusual size; l)ut among the Chiapas specimens are some of the usual dimen- 

 sions. The smallest .specimens are from Costa Rica. 



