318 ICTERID.J;, 



pair black ; bill j^ellow ; feet black : whole length 18-5 inches, 

 wing 9-5, tail 8"5. Female similar, but smaller. 



Hah. State of Antioquia, Colombia. 



In our Catalogue of Mr. Salmon's collections from Antioqitia, Mr. 

 Salvin and I united this form to 0. afrocasfaneus ; but on reexami- 

 nation of the fine series of these birds now before me, I find that 

 the Antioquian bird may be easily distinguished by the much darker 

 hues of its lower surface. The whole breast and abdomen are of a 

 dark olive, with a slight tinge of the chestnut-brown only on the 

 flanks ; and the thighs are almost black. In 0. atrocastaneus the 

 whole under surface is of a rich uniform chestnut-brown, and the 

 thighs are but slightly darker. 



a. (^ ad. sk. Concordia, Antioquia (»S'?/?now). SclaterColl. 

 h. 5 ad. sk. Envigado, Antioquia {Salmon). Sclater Coll. 



(Types of the species.) 



c. 2 ad. sk. Envigado, Antioquia (Salmon). Salvin-Godman Coll. 



d. 2 ad. sk. Froutino, Antioquia (Salmon). Salvin-Godman Coll. 



5. Ostinops alfredi. 



Cassicus alfredi, DesMws, Voij. Cast., Ois. p. 67, t. xix. fig. 2 

 (1855) (?). 



Ostinops alfredi, Tacz. Orn. Per. ii. p. 407. 



Cassicus atrovirens, Tsvh. Faun. Per., Aves, p. 230. 



Ostinops atrovirens, Scl. P. Z. S. 1859, p. 140, 1860, p. 88 (Ecuador) ; 

 Scl. et Salv. P. Z. S. 1860, p. 182 (Ucayali), 1873, p. 266 (Ama- 

 zons). 



Ostinops atrocastaneus, Cab. Journ. f. O. 1873, p. 309 ; Scl. Ibis, 

 1883, p. 153. 



Above dark brownish olive ; wings blackish, edged with olive ; 

 rump fulvous ; front yellow : beneath dark brownish olive, throat 

 paler, crissum fulvons ; tail yellow, outer pair of rectrices, outer 

 webs of next pair, central pair, and inner webs of pair next to central 

 pair olive ; bill yellow; feet black : whole length 16 inches, wing 

 8-5, tail 8. Female similar, but smaller. 



Hub. Ecuador and Upper Amazonia. 



The colouring of the tail, although generally as above described, 

 varies in some specimens. In one of Buckley's skins from Ecuador 

 the black extends partially over the inner webs of the second median 

 pair and over the outer webs of the third and fourth external pair. 



a. <S ad. sk. Quito. J. Gould, Esq. 



h. 2 ad. sk. Pallatanga, Ecuador (Fraser). Sclater Coll. 



e. d. (S ad. sk. San Jos6, Ecuador (Buckley). Salvin-Godman Coll. 

 e. (S ad. sk. E. Peru. Sclater Coll. 



/. 2 ad. sk. E. Peru (Tschudi). Sclater Coll. 



6. Ostinops sincipitalis. 



Ostinops sincipitalis, Cab. Journ. f. O. 1873, p. 309 ; Scl. Ibis, 1883, 



p. 154. 

 Cassicus alfredi, Cass. Pr. Ac. Sc. Phil. 1867, p. 69 (nee DesMurs). 



