238 FORMICAEIID^, 



when with Lieut. Michler's Expedition to the Isthmus of Darien, It was found on the 

 Kiver 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 mncleannani ^. 



Darien seems to be the southern limit of the range of P. michleri in this direction. 

 Northwards we have not traced it beyond the Santa Fe district. We have no speci- 

 mens from Chiriqui, and in Costa Eica the closely allied form, P. zeledoni, seems to 

 take its place, 



2. Fittasoma zeledoni. 



Pittasoma michleri zeledoni, Ridgw. Pr. U. S. Nat. Mus. vi. p. 414 * ; Zeledon, An. Mus. Nac. 



Costa Eica, 1887, p. 115 ". 

 Pittasoma zeledoni, Scl. Cat. Birds Brit. Miis. xv. p. 310 '. 



P. miehleri sitnilis, sed multo major, capite toto nigro, auricularibus tantum castaneo vix notatis. Long. al« 

 4'35, candee 1'6, tarsi 2*0. (Deser. ex Eidgway I. s. c.) 



Hah. Costa Eica, 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 rohustum, compressum. 



GRALLAEIA. 



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. przewalskii, 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 



