12 Mr. G. N. Lawreuce on new species of Birds from Panama. 



4. TODIROSTRUM OLIVACEUM. 



Male. — Upper plumage olive-green j wings and tail blackish 

 brown, the latter edged with olive-green ; wing-coverts and 

 quills margined with greenish yellow j under plumage pale yel- 

 low, with the throat olivaceous ; under wing-coverts pale yellow ; 

 bill black, with the cutting-edges and base of the under mandible 

 whitish J irides dirty white ; legs and feet light brown. 



The female differs only in being less olivaceous on the throat. 



Length 31 in.; wing 1|; tail Ij^gj bill ^j tarsi f. 



This species has the same aberrant form of bill as T. cinerei- 

 gulare, Sclater, the culmen being even more curved. As these 

 two differ in this respect from the typical species, as suggested 

 by Mr. Sclater (Ibis i. p. 444), it may be advisable to separate 

 them *. 



5. Tyranniscus PABVusf, sp. nov. 



Male. — Crown slaty-olive, a line of pale yellow from the 

 bill over the eye ; upper plumage deep olive-green ; tail brown, 

 edged with yellowish gi'een, the under parts of the tail-feathers 

 greyish with the shafts white; quills blackish-brown, and toge- 

 ther with the wing-coverts edged with bright yellow ; throat and 

 breast ashy white, abdomen and under tail-coverts pale yellow, 

 sides olivaceous ; under wing-coverts pale yellow ; bill dark horn- 

 colour; irides white; legs and feet black. 



Length 4 in.; wing 1|; tail 1|; tarsi |. 



The female is like the male in plumage, but smaller, measuring 

 in length only 3| inches. 



6. Tyrannulus brunneicapillusJ, sp. nov. 



Male. — Head above of a fine dark brown, with a narrow 

 whitish line from the bill over the eye ; upper plumage olive- 

 green ; tail brownish olive, edged with olive-green ; quills black- 

 ish brown, narrowly margined with greenish yellow ; under plu- 



* In the catalogue of my collection which I am now preparing, I 

 have proposed the generic term Oncostoma for Todirostrum cinereigulare. 

 Mr. Lawrence's bird forms a good second species of the genus. — P. L. S. 



t This little bird is related to Tyranniscus chrysops (Tyrannulus chry- 

 sops, mihi, Proc.Zool. Soc. 1858, p. 10), but is apparently distinct.— P. L.S. 



\ A near ally of T. semiflavus, Scl. et Salv. (Proc. Zool. Soc. 1861, p. 300), 

 from Guatemala, but differing in its brown head and larger bill.— P. L. S. 



