BIRDS OF KORTH AND MIDDLE AMERICA. 



469 



exposed culmen, 16.51; depth of bill at base, 8.38; tarsus, 27.94; mid- 

 dle toe, 18.29.^ 



Costa Rica to Peru and Venezuela. 



Tanagraassimilis BoissoNEAV, Rev. Zool., 1840, 67 (Colombia). 



A.[rremon] assirotKs Gray, Gen. Birds, ii, 1844, 361. 



IBuarremon] assimilw Bonaparte, Oonsp. Av., i, 1850, 484.— Sclater and Salvin, 

 Norn. Av. Neotr., 1873, 24. 



B.luarremon] agsimilis Oabanis, Mus. Hein., i, 1851, 141 ("Mexico"). 



Suarremon assimilis Sclater, Proc. Zool. Soc. Lond., 1855, 155 (Bogota, Colom- 

 bia); 1856, 85 (monogr.; Bogota; Quito, Ecuador); 1859, 441 (Bio Napo, e. 

 Ecuador); 1860, 76 (Lloa, centr. Ecuador); Synop. Av. Tanagr., 1856, 23 

 (monogr.); Cat. Am. Birds, 1862, 90 (Venezuela; Bogota; Pallatanga, w. 

 Ecuador); Cat. Birds Brit. Mus., xi, 1886, 257 (Venezuela; Bogota, and 

 Medellin, prov. Antioquia, Colombia; Sical and Quito, Ecuador; Cutervo 

 and Callacate, Peru). — Sclater and Salvin, Proc. Zool. Soc. Lond., 1875, 

 234 (Merida, Venezuela); 1879, 504 (Antioquia, Colombia).— Salvin, Ibis, 

 1874, 308 (Costa Rica; crit.); Cat. Strickland Coll., 1882,197 (Colombia).— 

 Taczanowski, Proc. Zool. Soc. Lond., 1880, 196 (n. Peru) ; 1882,115 (n. e. Peru) ; 

 Orn. du P^rou, ii, 1885, 531. — Berlepsch and Taczanowski, Proc. Zool. Soc. 

 Lond., 1884, 291 (Cechce, w. Ecuador). — Salvin and Godman, Biol. Centr.- 

 Am., Aves, i, 1884, 318. — Taczanowski and Berlepsch, Proc. Zool. Soc, 

 1885, 84 (San Rafael and Bancs, centr. Ecuador). — Zeledon, Cat. Aves de 

 Costa Rica, 1882, 8; An. Mus. Nac. Costa Rica, i, 1887, 110 (Ecuador).— 

 Allen, Bull. Am. Mus. N. H., ii, 1889, 71 (Quito).— Cherrie, Expl. Zool. 

 Costa Rica, 1893, 26 (Boruca, alt. 530 m., and Buenos Aires, alt. 300 m., s. 

 Costa Rica). — Salvadori and Fbsta, Boll. Mus. Zool., etc., Torino, xv, 1899, 

 19 (Pun, e. Ecuador; Nanegal, Niebli, and near Corazon, w. Ecuador). — 

 Allen, Bull. Am. Mus. N. H., xiii, 1900, 167 (Bonda, prov. Santa Marta, 

 Colombia; descr. young). 



Buarremon assimilis? Lawrence, Ann. Lye. N. Y., ix, 1868, 101 (Guiatil, Costa 

 Rica; crit.). — Frantzius, Journ. fiir Orn., 1869, 300 (Oosta Rica). — Salvin, 

 Ibis, 1874, 308 (Costa Rica; crit.). 



Genus PSELLIOPHORUS Ridgway. 



Pselliophorus'' Ridgway, Auk, xv, July, 1898 (pub. May 14, 1898), 225. 

 Tachyphonus tibialis Lawrence. ) 



(Type, 



Rather small terrestrial Fringiilidse related to the genus Bua/rremon, 

 but with mandibular tomium destitute of distinct subbasal tooth; tail 

 longer than wing, much rounded, composed of broad but somewhat 

 acuminate rectrices with semi-decomposed webs; plumage of forehead 



' One specimen, from Guiatil, Costa Rica. 



Of the twelve adult specimens examined only three are sexed. They average 

 according to locality as follows: 



'^ From TpeWiOipopoi; ipsXAior = armilla. 



