182 Mr. G. N. Lawrence on new Birds from Panama. 



tail-coverts dull rufous; bill brownish horn-colour, the under 

 mandible a little paler than the upper ; legs and feet dark brown. 

 Length 7 inches; wing 3f ; tail 1|; bill 1|; tarsi f|. 



Fam. FORMICARIIDiE. 



3. FORMICIVORA VIRGATA, sp. nOV. 



Male. Intense black, a large concealed patch of pure white on 

 the back ; tail black, each feather with a white spot at the end, 

 largest on the outer feathers ; wings black, the bend of the wing 

 white, the lesser coverts marked with small white spots, as in 

 F. houcardi, and the larger coverts ending in pure white and 

 forming a conspicuous mark on the wing; under wing-coverts 

 and inner edges of quills white ; the feathers on the sides of the 

 breast marked along their shafts with a narrow stripe of 

 white, which reaches nearly to their ends — these marks being 

 only apparent on raising the feathers ; bill and legs black. 



Length 4 inches; wing 1| ; tail If; tarsi \\. 



Female. Resembles the male in the upper plumage, but below 

 is entirely of a very deep chestnut-red. 



This species belongs to the group embi'acing F.quixensis.F.buu- 

 cardi, and F. consohrina, and most resembles the latter, but diflfers 

 in having longer wings and tail, in the greater extent of white 

 on the bases of the feathers of the back, and in having the pec- 

 toral feathers marked with white stripes down their centres, in 

 this last character apparently differing from all its allies. 



4. Myrmelastes corvinus, sp. nov. 



Male. The general colour is crow-black, with a large con- 

 cealed spot of pure white between the shoulders ; tail black ; 

 quills blackish brown, with their inner edges greyish white ; 

 smaller wing-coverts black, narrowly edged with white, some of 

 the white tinged with rufous ; larger coverts dark chocolate- 

 brown, ending with dull rufous ; bill black ; legs dark brown. 



Length of skin 6 inches ; wing 2| ; tail 2^ ; tarsi 1^ ; bill |. 



Fam. TYRANNIDtE. 



5. Myiozetetes marginatus, sp. nov. 



Second, third, and fourth quills equal and longest, first shorter 

 than sixth. 



