662 



BULLETIN 50, UNITED STATES NATIONAL MUSECTM. 



25.91 (22.35); depth of bill at base, 13.21-15.49 (13.97); tarsus 

 27.69-30.23 (28.96); middle toe, 19.81-22,61 (21.34).' ' 



Southern Mexico, in States of Tamaulipas (Alta Mira), Vera Cruz 

 Oaxaca, Chiapas, Tabasco and Yucatan, and south to Costa Rica. 



Tanagra (Saltalor) atriceps Lesson, Cent. Zool., 1830, 208, pi. 69 (Mexico; Parsi 

 Mus.). 



/S'. [altator] atriceps Gray, Gen. Birds, ii, 1844, 363. — Cabanis, Mus. Hein. i 1851 

 142 (Mexico). 



ISaltator] atriceps Bonaparte, Consp.. Av., i, 1850, 488 (Mexico).— Gray, Hand. 

 list, ii, 1870, 74, no. 7073 (a. Mexico) .— Sclater and Salvin, Norn. Av 

 Neotr., 1873, 26. 



Saltator atriceps Sclater, Proc. Zool. Soc. Lond., 1856, 69 (monogr.; Cordova 

 Vera Cruz; Papantla, Vera Cruz; Escuintla, Gautemala; Yucatan), 302 (Cor- 

 dova); 1858, 858. (Comayagua, Honduras); 1859, 58 (Omoa, Honduras), 

 364 (Jalapa, Vera Cruz), 377 (Playa Vicente, Oaxaca); 1864, 174 (valley 

 of Mexico) ; Synop. Av. Tanagr., 1856, 7 (monogr.); Cat. Am. Birds, 1862,95 

 (Vera Cruz) ; Cat. Birds Brit. Mus., xi, 1886, 283 (Jalapa; n. Yucatan; Belize, 

 British Honduras; Chisec, Coban, Retalhuleu, Volcan de Agua, San Pedro 

 Martir, El Zapote, and Costa Grande, Guatemala; Nicaragua; Costa Rica.) — 

 Sclater and Salvin, Ibis, 1859, 14 (Comayagua, Honduras; Ifucatan); Proc. 

 Zool. Soc. Lond., 1870, 836 (San Pedro, Honduras).— Taylor, Ibis, 1860, HI 

 (Comayagua).— Lawrence, Ann. Lye. N. Y., ix, 1868, 102 (Pacuar, Costa 

 Rica); ix, 1869, 200 (Merida, n. Yucatan^; Bull. U. S. Nat. Mus., no. 4, 1876, 

 19 (Guichicovi and Santa Efigenia, Oaxaca). — Sumichrast, Mem. Bost. Soc. 

 N. H., i, 1869, 549 (hot and temperate regions. Vera Cruz, up to 4,000ft.). 

 Salvin, Cat. Strickland Coll., 1882, 199 (Guatemala). — Boucahd, Proc. Zool. 

 Soc. Lond., 1883, 443 (Merida, Yucatan).— Nutting, Proc. U. S. Nat. Mus., 

 vi, 1883, 382 (Sucuyd, Nicaragua; habits), 400 (Los Sdbalos, Nicaragua).— 

 Salvin and Godman, Biol. Centr.-Am., Aves, i, 1883, 325, part. — Feriuei- 

 Pehez, Proc. U. S. Nat. Mus., ix, 1886, 141 (Janhuitlan ?, Oaxaca; Plan del 

 Rio, Vera Cruz). — Zelbdon, An. Mus. Nac. Costa Rica, i, 1887, 111 (Naranjo, 

 Costa Rica). —RiDGWAY, Proc. U. S. Nat. Mus., x, 1888, 586 ( Segovia R., Hon- 

 duras). — Richmond, Proc. U. S. Nat. Mus., xvi, 1893, 491 (Greytown, Nica- 

 ragua); xviii, 1896, 631 (Alta Mira, Tamaulipas). — Chapman, Bull. Am. 

 Mus. N. H., X, 1898, 28 (Jalapa; notes). 



Tanagra gnatho Liohtenstbin, Preis- Verz. , Mex. Yog., 1831, 2 (Mexico; see 

 Journ. fiir Orn., 1863, 56). 



' Twelve specimens. 



Too small a proportion of the specimens examined have the sex determined to ena- 

 ble me to say whether there is any variation in measurements with locality. The 

 averages of those measured are as follows: 



Locality. 



Wing. 



Tail. 



Ex- 

 posal 

 culmen. 



Depth 

 of bill 

 at base. 



Middle 

 toe. 



MALES. 



Seven adult males from Mexico 



One adult male from Guatemala. . . 



One adult male from Honduras 



One adult male from Nicaragua . . . 

 Two adult males from Costa Rica. . 



FEMALES. 



Three adult females from Mexico. . 

 Five adult females from Yucatan . . 

 Two adult females from Nicaragua 

 One adult female from Costa Rica . 



122. 94 

 126.49 

 124. 46 

 123.19 

 113. 79 



117. 86 

 112. 78 

 113. 28 

 112. 27 



123.95 

 125.48 

 125.73 



116. 32 

 116.82 



119.38 



116. 33 

 113.28 

 108. 46 



23.88 

 25.16 



14.22 

 13.40 

 16.24 



23.11 

 24.64 



23. 11- 

 21.69 

 23.11 

 25.91 



13.21 

 13.72 

 14.48 

 15.49 



30.23 

 29.72 

 30.48 

 30.73 

 30.48 



28.19 

 28.96 

 29.21 

 27.94 



21.84 

 21.08 

 22.61 

 22.61 

 22.36 



22.36 

 20.83 

 21.69 

 21.08 



