Genus Tachyphows. §3 



T. nigerrimus seems to be a common inhabitant of the equinoc- 

 tial parts of South America. I found it at Pernambuco, and it 

 appeared to be not unfrequent on the table land of Bahia, associ- 

 ating in pairs, and never perching on the ground. 



2. Tachyphonus olivaceus. Sp. Nov. 

 T. supra olivaceus, infra fulvido-albus ; vertice cinereo ; regione oculariflavd. 

 Above olive ; beneath fulvous white ; crown cinereous ; region 

 of the eye yellow. 



Description, — Size of T. nigerrimus ; the form of the bill is 

 typical, but its size is intermediate between that bird and T. Des* 

 maresti; its colour is black. Plumage above, brownish olive ; 

 ears, crown of the head, and sides of the neck, dull cinereous ; 

 the feathers round the eye are yellow, and the sides of the head 

 obscure olive. All the under parts are fulvous white ; vent and 

 flanks brownish, but the under tail covers are tinged with fulvous. 

 Tail rather long, the colour brown ; but the outer webs of the fea- 

 thers are olive. Tarsi pale. 



Total length 6£, bill T ^, wings 3, tail 2f , tarsi T 7 <y, 



I have ventured to describe this as a distinct species ; although, 

 from its olive-coloured plumage, I entertain some doubts whether 

 it may not prove to be a female, in which case the specific cha- 

 racter must be altered to suit the plumage of the male. In the 

 proportions of the bill and tail it does not agree with any of the 

 species here described. 



This bird was originally in the collection of Mr. Hullet : IJueno* 

 Ayres was given as its locality. 



3. Tachyphonus Vigorsi. Sp. Nov. 

 T. violaceo-niger, cristd rubrd; scapularibtis tectricibusque inter ioribus niveis. 



Glossy black ; crest red ; scapular and under wing covers 

 snowy. 



In its size and general proportions, this species resembles T. 

 nigerrimus, but the bill is comparatively shorter ; and the upper 

 mandible is less arched, and less elevated between the frontal 

 feathers. On the crown of the head is a short narrow crest of an 



