144 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



wing, even, slightly double rounded, or slightly emarginate, the 

 rectrices (10?) very narrow, rounded or minutely subacuminate ter- 

 minally. Tarsus much longer than commissure, about one-third as 

 long as wing, slender, distinctly scutellate, the plantar scutella in a 

 single longitudinal series, bending around to the inner side, where 

 separated from the inner edge of the acrotarsium by a rather broad 

 shallow groove; middle toe, with claw, much shorter than tarsus, 

 decidedly shorter than commissure; outer toe, without claw, reach- 

 ing very nearly to middle of subterminal phalanx of middle toe, the 

 inner toe very slightly shorter; hallux about as long as inner toe but 

 much stouter; basal phalanx of middle toe united for more than half 

 its length to outer toe, for about half its length to inner toe; claws 

 moderate in size and curvature, that of the hallux shorter than the 

 digit, acute, much compressed. Plumage full, soft, and (mostly) 

 blended, that of rump and flanks more elongated and fluffy or lax; 

 feathers of pileuni slightly elongated, distinctly outlined. 



Coloration. — (I) Above plain brown or olive; beneath white, or 

 white and ocliraceous, tawny, or rufescent, usually more or less 

 streaked or squamated with black or dusky. (II) Head (all round) 

 chestnut; rest of plumage plain brownish gray above, lighter and 

 clearer gray beneath, with patch of white on lower abdomen and 

 foreneck. 



Range. — Costa Rica to mountains of British Guiana and Ecuador. 

 (Six species.") 



KEY TO THE SPECIES OF GRALLARICULA. 



a. Under parts without streaks or other markings (tawny or tawny-ochraceous, the 

 throat and abdomen sometimes white or whitish). (Santa Marta district of 



Colombia to Venezuela.) Grallaricula ferrugineipectus (extralimital).& 



aa. Under parts more or less streaked or spotted with blackish or dusky. 



h. Paler olive-brown above; under parts with less of ochraceous and with black 

 streaks or squamations much heavier. (Colombia to eastern Ecuador.) 



Grallaricula flavirostris (extralimital).c 



6&. Darker olive-brown above; under parts with more ochraceous or ochraceous- 



tawny (mostly so) with blackish streaks or squamations indistinct. (Costa 



Rica and western Panam4.) Grallaricula costaricensis (p. 145). 



a Of these I have seen only G . Jlavirostris (Sclater), G. ferrugineipectus (Sclaier), 

 and G. costaricensis Lawrence. 



b Grallaria ferrugineipectus Sclater, Proc. Zool. Soc. Lond., 1857 (pub. Oct. 21), 

 129 (near Cardcas, Venezuela; coll. Paris Mus.); Ann. and Mag. N. H. (2), xx, 1857, 

 462 {TeTprint).— Grallaricula ferrv.gineipeclus Sclater, Proc. Zool. Soc. Lond., 1858, 284 

 (monogr.); Cat. Birds Brit. Mus., xv, 1890, 32G.—Conopophaga hrowni Bangs, Proc. 

 Biol. Soc. Wash., xiii, Nov. 11, 1899, 100 (Chirua, Santa Marta, Colombia, 7,000 ft.; 

 coll. E. A. and O. Bangs). 



c Grallaria flavirostris Sclater, Proc. Zool. Soc. Lond., 1858 (pub. Apr. 26), 68 (Rio 

 Napo, e. Ecuador; coll. Verreaux). — Grallaricula Jlavirostris Sclater, Proc. Zool. Soc. 

 Lond., 1858, 283 (monogr.); Cat. Birds Brit. Mus., xv, 1890, 326. 



