238 FORMICARIID2. 
when with Lieut. Michler’s Expedition to the Isthmus of Darien. It was found on the 
River Truando on 22nd Jan., 1858, above its junction with the Atrato, but before 
reaching the Cordillera. It was not common, but frequented woody places, running 
on the ground very swiftly and scratching amongst the leaves. M‘Leannan soon after 
found this bird on the Panama Railway, and the specimens of both collectors were 
before Cassin when he described the species in 1860 +. 
Some of M‘Leannan’s birds were found on the ground in retired places in the forest, 
where they appeared to feed on ants?. Others were noticed in low shrubs in company 
with Phlogopsis macleannant *. 
Darien seems to be the southern limit of the range of P. méchleri in this direction. 
Northwards we have not traced it beyond the Santa Fé district. We have no speci- 
mens from Chiriqui, and in Costa Rica the closely allied form, P. zeledom, seems to 
take its place. 
2. Pittasoma zeledoni. 
Pittasoma michleri zeledoni, Ridgw. Pr. U.S. Nat. Mus. vi. p. 414°; Zeledon, An. Mus. Nac. 
Costa Rica, 1887, p. 115°. 
Pittasoma zeledoni, Scl. Cat. Birds Brit. Mus. xv. p. 310°. 
P. michleri similis, sed multo major, capite toto nigro, auricularibus tantum castaneo vix notatis. Long. ale 
4-35, caude 1-6, tarsi 20. (Descr. ex Ridgway J. s. ¢.) 
Hab. Costa Rica, Rio Sucio (J. Cooper !), Jimenez (Zeledon *). 
Though closely allied to P. michleri this species appears to have definite characters. 
We do not possess a specimen of it, and Mr. Ridgway’s description gives all the 
information we have concerning it. 
f", Rostrum robustum, compressum. 
GRALLARIA. 
Grallaria, Vieillot, Anal. p. 43 (1816) ; Scl. Ibis, 1877, p. 437; Scl. Cat. Birds Brit. Mus. xv, 
p. 311. 
Mr. Sclater’s account of the genus Grallaria in the ‘Catalogue of Birds in the 
British Museum’ is based upon his paper in ‘ The Ibis’ for 1877. The same divisions 
are adopted, but the number of recognized species is raised from 27 to 31, to which 
we now add another, G. intermedia, not recognized by Mr. Sclater, and the recently 
described G. lizanoi. This leaves only G. przewalskit, 'Tacz., as unknown to us. 
The genus is distributed over nearly the whole of Tropical America, the dense 
forests of the eastern slopes of the Andes possessing by far the larger number of 
species. In Central America and Mexico only seven species are found, three of them 
