190 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



(skins), 212.1-228.6 (219.7); wing, 129-134.6 (131.6); tail, 88.9-95.3 

 (91.4); culmen, 28.5-30.5(30); depth of bill at base, 10.7-12.4(11.4); 

 tarsus, 27.2-28.5 (27.7); middle toe, 18-20.3 (19.1).^ 



Adult female. — Similar to the adult male, but smaller, with the 

 orange-red rump patch more restricted and usually rather more orange; 

 length (skins), 194.3-195.6 (194.8); wing, 109.7-121.4 (115.8); tail, 

 79.2-81.3 (80.3); culmen, 27.7-30.5 (28.5); depth of bill at base, 

 10.9-11.4 (11.2); tarsus, 24.9-27.4 (25.9); middle toe, 17.8-20.3 (19.1).^ 



Nicaragua (Greytown, Rio Escondido, Chontales, etc.), through 

 Costa Rica, Chiriqui, Veragua, and Isthmus of Panama, to northern 

 Colombia (Turbo). 



Cassicus uropygicdis (not of Lafresnaye) Cassin, Proc. Ai;. Nat. Sci. Phila., 1860, 

 139 (Falls of Rio Truando, n. Colombia). 



Casmculvs uropygialis Laweence, Ann. Lye. N. Y., vii, 1861, 297 (Lion Hill, 

 Panama K. R. ) . 



Cassicuhis microrhynchus Sclater and iSalvin, Proc. Zool. Soc. Lond., 1864, 353 

 (Lion Hill, Panama R. R., Colombia; coll. P. L. Sclater). — Lawrence, Ann. 

 Lye. N. Y., viii, 1865, 181 (Greytown, Nicaragua). 



Cassicus microrhynchus Cassiti, Proc. Ac. Nat. Sci. Phila., 1867, 65 (monogr.). — 

 Frantzius, Journ. fiir Orn., 1869, 303 (Tucurriqui, Costa Rica). — Zeledon, 

 Cat. Aves de Costa Rica, 1882, 9; An. Mus. Nac. Costa Rica, i, 1887, 112 

 (Pozo Azul de Pirris and Pacuare, Costa Rica). — Sclater, Ibis, 1883, 162 

 (monogr.); Cat. Birds Brit. Mus., xi, 1886, 325 (Chontales, Nicaragua; Peje, 

 Costa Rica; Santiago, Cordillera de Tol6, and Bugaba, Veragua; Lion Hill 

 and Panama, Panama R. R. ). — SALviNand Godman, Biol. Centr.-Am., Aves, 

 i, 1886, 442.— Cherrie, Expl. Zool. Val. Naranjo, 1893, 15; Expl. Zool. Costa 

 Rica, 1893, 30 (Lagarto).— Richmond, Proc. U. S. Nat. Mus., xvi, 1893, 495 

 (Rio Escondido, Nicaragua, and Rio Frio, Costa Rica; habits, nest, song, ef*.). 



[Cassicus'] microrhynchus Sclater and Salvin, Nom. Av. Neotr., 1873, 36. 



C'cicieas microrhynchus Salvin, Proc. Zool. Soc. Lond., 1867, 142 (Cordillera de 

 Tole, Santiago, and Santa F6, Veragua); 1870, 190 (Bugaba, Veragua) ; Ibis, 

 1869, 319 (Peje, Costa Rica); 1872, 313, 317 (Chontales, Nicaragua). 



Genus CASSICULUS Swainson. 



Cam,ailus Swainson, Zool. Illustr., iii, 1827, 352; Philos. Mag., new ser., i, 1827, 

 436. (Type, Icterus melanicterus Vieillot. ) 



Medium-sized or rather large arboreal Icteridse, with head conspicu- 

 ously crested, bill wedge-shaped, tail nearly as long as wing, graduated; 

 the plumage black and yellow. 



Bill equal to or longer than head, cuneate, acute, with straight out- 

 lines, its basal depth less than one-third the length of culmen (about 

 one-half the distance from nostril to tip of maxilla), the basal width 

 much less than the depth; culmen straight, rounded, not deviated nor 

 expanded basally, terminating posteriorly in an obtuse point; gonys 

 straight, shorter than maxilla from nostril; commissure straight to 

 behind nostril, where decidedly and rather abruptly deflexed to the 



'Six specimens, ^Four specimens. 



