158 Mr. P. L. Sclater on the 



Nitide niger, plaga tectricum alarium superiorum, dorso 



postico, crisso et caudse dimidio basali flavissimis ; rostro 



albo, pedibus nigris : long, tota 11, alse 6, caudse 4'3. 



Fem. Mari similis, sed magis fusco-nigra : long, tota 



8"5, alae 4*7, caudse 36. 



Hab. Colombia (Bogota), Guiana, et Amazonia tota : Para 



[Wallace); Upper and Lower Ucayali [Bartlett); Sarayacu, 



Ecuador [Buckley); Bolivia, Chiquitos [d'Orb.); Yungas 



[Buckley) ; Brazil, Bahia [Wucherer) ; Rio Belmonte [Max.); 



Goiaz and Cuyaba [Natt.) . 



This is a common and widely spread species in South 

 America, as will be seen by the above-given list of localities. 

 In Western Ecuador, Northern Colombia, and Central Ame- 

 rica, its place is taken by C. flavicrissus. Concerning its 

 pendent nest see Neuwied (Beitr. iii, p. 1239) and Bartlett 

 (P. Z. S. 1872, p. 266). 



2. Cassicus flavicrissus. 



Cassicuhis flavicrissus, Sclater, P. Z. S. 1860, p. 276 ; Cat. 

 A. B. p. 129; Cass. Pr. Acad. Phil. 1867, p. 67 ; Ibis, 1871, 

 p. 329, et 1872, p. 468 ; Tacz. P. Z. Z. 1877, p. 322; Scl. et 

 Salv. P. Z. S. 1879, p. 509, et Nomencl. p. 35. 



Cacicus persicus, Scl. et Salv. P. Z. S. 1864, p. 353. 



Cassicus vitellinus, Lawr. Pr. Acad. Phil. 1864, p. 107 ; 

 Cass. Pr. Acad. Phil 1867, p. 68. 



Nitide niger, plaga tectricum alarium superiorum, dorso 

 postico, crisso et caudse parte tertia basali aurantiaco- 

 fiavis ; rostro albo ; pedibus nigris : long, tota 11-5, alse 

 Q-7 , caudic 4'5. Fem. Mari similis, sed paulo minus 

 nitida et valde minor : long, tota 9, ahe 5*3, caudse 3"5. 



Hab. Panama [McLeannan ; valley of the Magdalena 

 {Wyatt) ; Antioquia [Salmon); Western Ecuador [Fraser). 



Obs. Similis C. persico, sed colore caud^ flavo vix ultra 

 tectrices extenso et rostro fortiore dignoscendus. 



Mr. Lawrence has very accurately stated the differences 

 which distinguish this northern bird from Cassicus persicus. 

 An examination of the tail at once serves to separate the two 

 species. In the present bird the yellow of the rectriees hardly 

 extends beyond the coverts, either above or below ; in C. 



