MYRMECIZA. 229 
southern MM. swainsoni does not penetrate beyond Panama, whilst W/. lemosticta and 
M. stictoptera ave peculiar to Costa Rica, or its southern frontier. 
M. swainsoni has a somewhat slender bill, the nostrils oval and open, the nasal 
feathers short, but fully developed, not reaching so far as the nostrils. The naked 
Space round the eye is small, and chiefly behind the orbit. The tail is rather long and 
rounded ; the tarsi are slender, the acrotarsium scutellate, the plantaentire. I. lemo- 
sticta has a rather stouter bill, the nasal feathers extend to the posterior margin of the 
nostrils; the tail is shorter and less rounded. 
1. Myrmeciza swainsoni. 
Myrmothera longipes, Vieill. N. Dict. d’Hist. Nat. xii. p. 118 (??)*. 
Drymophila longipes, Sw. Zool. Il. (2) i. t. 23°. 
Myrmeciza longipes, Scl. P. Z. 8.1858, p. 249 (partim)*; Cat. Birds Brit. Mus. xv. p- 278; 
Lawr. Ann. Lyc. N.Y. vii. p. 3254; Scl. & Salv. P. Z.S. 1864, p. 357°. 
Myrmeciza swainsoni, Berl. Ibis, 1888, p. 130°. 
Myrmeciza boucardi, Scl. Cat. Birds Brit. Mus. xv. p. 279 (partim, nec Berlepsch)’. 
Supra rufo-castanea, plaga dorsali parva celata alba, pileo eb cervice postica cinereis plumis medianis medialiter 
rufo-brunneis ; capitis lateribus infra oculos, gutture et pectore nigris; abdomine medio albo utrinque 
cinereo ; hypochondriis et tectricibus subalaribus fulvescentibus, subalaribus griseo-albis, remigibus interne 
cervino marginatis : rostro nigro, pedibus carneis. Long. tota 6-0, ale 2°7, caude rectr. med. 2:1, rectr. 
lat. 1°6, rostri a rictu 0-9, tarsi 1-2. 
Q supra mari similis, subtus, preter abdomen medium album, fulva, gula albicantiore. (Descr. maris et feminse 
ex Veraguas, Panama, Mus. nostr.) 
Hab. Payama, Veraguas (Arcé7), Lion Hill Station (Md Leannan + *). — Venuzvug.a ; 
TRINIDAD ; GUIANA?, 
The bird of this form, obtained by the hunters of Bogota, was separated by Count 
Berlepsch as M. boucardi, the chief difference consisting in the whole of the top of the 
head and back of the neck being dark cinereous instead of the middle feathers having 
rufous-brown centres. But the typical bird also comes from Colombia, as Mr. T. H. 
Wheeler has recently sent us skins from Villavicencio in the lanos of the R. Meta 
which agree with the Guiana form. 
Mr. Sclater places the Panama birds with M. doucardi?; but this is an error, as 
they differ in no way from the form found in the countries lying along the north 
coast of South America, which is the bird usually called M. longipes (Vieill.), a name 
misapplied according to Count Berlepsch, who substituted WZ. swainsoni for it ®, 
M. swainsoni and its close ally M. boucardi form a distinct section of the genus, 
distinguished by the uniform chestnut-red of the back, wings, and tail. 
The range of this species in the State of Panama is very limited, and does not appear 
to extend much beyond the Line of Railway. No specimens have reached us from the 
Chiriqui district. 
