Mr. E. L. Layard on Birds observed at Para. 387 



spring up at insects on the underside of leaves ; and the snap 

 of their bills is audible for a long distance. 



7-68. Thamnophilus doliatus (L.). 



Shot on the ground while harrying a swarm of Eciton ants 

 (Sept. 18th, 1872), with which its stomach was filled. 



69. Thamnophilus simplex, Sclater,sp.nov.* (Plate XV.) 

 I shot these two birds (male and female) close together in 

 the woods near the Lazar Hospital, Para (10th January, 1873) . 

 Their stomachs contained comminuted insects. Before I shot 

 them I saw the female creeping about the branches of the 

 low underwood, seizing her prey off the underside of leaves. 

 The male did not show himself till I had reloaded and placed 

 the female in my collecting-bag : he then darted across the 

 path ; but I was too quick for him, and dropped him as he 

 pitched on the opposite side. 



-f-70. Cercomacra tyrannina, Scl. 



Shot on the ground in the forest, feeding upon ants (Sep- 

 tember 18th, 1872). 



71. FORMICIVORA GRISEA (Bodd.). 



Shot in the " travessa " (or cross street) near my house in 

 Nazare, creeping about the bush in search of insects, at which 

 it darted when at rest under leaves (9th December, 1872). 



72. PVRIGLENA ATRA (Sw.). 



Shot on the ground feeding on a foraging army of Saiiba 



* [I have not been able to find any described species of Thamnophilus 

 which agrees with this pair of birds, and I therefore characterize thein as 

 follows : — 



Thamnophilus simplex, sp. nov. 

 c? . Cinereus fere unicolor, alis caudaque interne obscurioribus : campterio 

 et punctis paucis tectricum alarium necnon rectricum externarum 

 niarginibus angustis albis : tectricibus subalaribns et primariorum 

 inarginibus interioribus albicantibus : rostro et pedibus nigris : iride 

 castanea : remigibus quarto et quinto longissimis : long, tota 5-o, ala) 

 2 # 6, caudne 2 - 2. $ . Pubiginosa, pileo intensiore, ventre magis cin- 

 namonieo, medialiter pallidiore : alis et cauda intus nigricantibus. 

 Hah. in vicin. urbis Para, imp. Brasil. {Layard). 

 Mus. P. L. S. 



Obs. Sp. Th. stellato, Spixi, proxima, sed crassitie minore et alis extus 

 fere immaculatis diversa. — P. L. S.] 



