2S BIRDS OF BRITISH GUIANA. 



Genus MYRMOTHERULA Scl. 

 Myrmotherula Sclater, P. Z. S. ISoS, p. 234. Type M.pygmcBa (Gmel.)- 



» ; 



Fig. 13. — Myrmotherula pygmxBa. 



The type of this genus is conspicuous by its small size, the 

 absence ot" a crest, the small and slender bill which is sharply 

 hooked, the rounded wing, the third, fourth, and fifth primaries 

 longest, and the second about equal to the seventh, the tail short 

 and rounded, longer than the culmen but shorter than the tarsus. 

 Male and female different in colour. 



Key to the Species. 



A. Abdomen uniform yellow, throat white. M. pygmcea, S , p. 26. 

 a. Thi-oat yellowish buff M. 'pygmoea, $ , p. 2 7. 



B. Abdomen and throat white profusely 



streaked with black J/, surinamensist, 6 , p. 27. 



h. Throat and abdomen pale fawn-colour 



sparsely streaked M. surinamensis, $ , p. 28, 



364. Myrmotherula pygmsea. 

 Pygmy Ant-bird. 



Muscicapa pygmcea Gmel. Syst. Nat. i. p. 933, 1789 (Cayenne). 



Formicivora pygmcea Cab. in Schomb. Keis. Guian. iii. p. 688, 1848. 



Myrmothenila pygmcea Salvin, Ibis, 1885, p. 425 (Bartica Grove, 

 Camacusa); Sclater, Cat. B. Brit. Mus. xv. p. 231, 1890; Bra- 

 bom-ne & Chubb, B. S. Amer. i. p. 196, no. 1961, 1912. 



Adult male. General colour of the upper surface black, the 

 feathers edged with white or sulphur-yellow, narrowly on the 

 bead, hind-neck, and outer webs of primary and secondary quills, 

 and more broadly on the upper wing-coverts ; rump and upper 



