BIKDS OF NORTH AND MIDDLE AMERICA. 457 



Southern Mexico, in States of Oaxaca and Tabasco (Teapa), through 

 Central America (both sides) to Panama Railroad. 



Arremon aiirantiirostris Lafresxaye, Rev. ZooL, 184:7, 72 (Panama). — Des Murs, 

 Icon. Orn., pi. 55. — Sclater, Proc. Zool. Soc. Lond., 1856, 83 (Isthmus of 

 Panama); 1859,377 (Playa Vincente, Oaxaca; crit.) ; Synop. Av. Tanagr., 

 1856, 21 (monogr.); Cat. Am. Birds, 1862, 93 (Choctum, Guatemala); Cat. 

 Birds Brit. Mus., xi, 1886, 275 (Choctum and Chisec, Guatemala; Belize, 

 Brit. Honduras; Chontales, Nicaragua; San Mateo and Tucurrique, Costa 

 Rica; Santa Fe and Bugaba, Yeragua; Panama). — Salvin and Sclater, Ibis, 

 1860, 32 (Coban, Guatemala) .—Lawrence, Ann. Lye. N. Y., vii, 1862, 298 

 (Lion Hill, Panama R. R. ); viii, 1865, 180 (Greytown, Nicaragua); ix, 

 1868, 102 (San Mateo, Dota, and Guiatil, Costa Rica). — Sclater and Salvin, 

 Proc. Zool. Soc. Lond., 1864, 351 (Lion Hill).— Salvin, Proc. Zool. Soc. 

 Lond., 1867, 140 (Santa Fe, Yeragua); 1870, 188 (Bugaba, Mina de Chorcha, 

 andCordillera del Chucu, Yeragua) ; Ibis, 1872, 317 (Chontales, Nicaragua). — 

 Fraxtzus, Journ. fiir Orn., 1869, 300 (Costa Rica). — Boucard, Proc. Zool. 

 Soc. Lond., 1878, 56 (San Carlos, Costa Rica); Liste Ois. Rec. Guat., 1878, 

 33 (Guatemala).— Ni-TTiNG, Proc. U. S. Nat. Mus., vi, 1883, 400 (Los Sab- 

 alos, Nicaragua). — Salvin and Godmax, Biol. Centr.-Am., Aves, i, 1886, 

 324. — Zeledox, Cat. Aves de Costa Rica, 1882, 8; An. Mus. Nac. Costa Rica, 

 i, 1887, 111 (Trojas de Puntarenas, Jimenez, Pacuare, and Pozo Azul de 

 Pirris, Costa Rica).- Ridgway, Proc. XJ. S. Nat. Mus., x, 1888, 586 (Segovia 

 R., Honduras) .— Cherrie, Proc. U.S. Nat. Mus., xiv, 1891, 343 (crit.); Expl. 

 Zool. Yal. Rio Naranjo, 1893, 14 (crit.) ; Expl. Zool. Costa Rica, 1893, 27 

 (Lagarto, Boruca, Terraba, and Buenos Aires, s. Costa Rica). — Richmond, 

 Proc. U. S. Nat. Mus., xvi, 1893, 490 (Rio Frio, Costa Rica, and Rio Escon- 

 dido, Nicaragua; habits; descr. nest and eggs). 



A.[rrcin(,n'\ aurrDitiirostris Gray, Gen. Birds, App., 1849, 16. — Bonaparte, Consp. 

 Av., i, 1850, 488 (Colombia). 



[Arremon] anrantiirostris Sclater and Salvin, Nom. Av. Neotr.,1873, 25. 



Arremon rufidorsalis Cassin, Proc. Ac. Nat. Sci. Phila., 1865, 170 (Turrialba, 

 Costa Rica; U. S. Nat. Mus.).— Lawrence, Ann. Lye. N. Y.,ix, 1868, 102. 



Arremon rufodorsalis Salvin, Ibis, 1874, 308 (crit. ; identitied as.-l. aurani'drostris). 



Arremon aurantiirostris saluratus Cherrie, Proc. U. S. Nat. ]VIus. , xiv, no. 855, Sept. 

 4, 1891, 345, in text (Choctum. Yera Paz, Guatemala; U. S. Nat. Mus.). 



GenLis LYSURUS Ridgway. 



Lysurus 'RiiiGW AY, Auk, xv, July (pub. May 13), 1898, 225. (Type, Buarremon 

 crassirostris Cassin. ) 



Similar to Ai'remou Vieillot but nostril broader, more rounded, with 

 superior operculum much less developed; wing much more rounded 

 {ninth primary very much shorter than secondaries, the eighth about 

 equal to secondaries or ])ut little longer); tail more rounded, almost 

 graduated, with the rectrices very broad, though pointed at the tips, 

 their webs semi-decomposed terminally; middle toe relatively longer, 

 the lateral claws falling much short of ba.se of middle claw. 



Coloration. — Pileum chestnut; rest of upper parts olive-green; 

 under parts, except chin and throat, olive-green, the abdomen yellow 

 in Z. craiisirostrli<. 



