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216 FORMICARIID. 
We have skins from Panama sent us by Mr. Hughes from Paraiso Station. One of 
these and another from M‘Leannan are males in fully adult black plumage ; the third 
is immature, slightly greyer on the flanks, and with white streaks on the throat. We 
refer all of them to C. nigricans, a bird we trace to Western Ecuador and Northern 
Colombia, but not beyond the line of Railway in the State of Panama. 
Salmon 3 describes the nest. of this species as made of dry grasses and placed between 
a fork at the extremity of the boughs of low bushes. The eggs are mahogany-colour, 
mottled with darker shades of the same colour. 
ad", Rectrices duodecem. 
FORMICIVORA. 
Formicivora, Swainson, Zool. Journ. ii. p. 145 (1825) ; Scl. Cat. Birds Brit. Mus. xv. p. 248. 
Formicivora contains about eighteen or nineteen described species, fifteen of which 
are included in Mr. Sclater’s Catalogue. These are widely distributed over Tropical 
America from Southern Mexico to South Brazil. The well-known /. bowcardi and the 
somewhat doubtful F. virgata are the only representatives of the genus found within 
our limits, and both belong to a small section of it in which the plumage of the males 
is mostly black and the tail comparatively short. 
The bill in F. Joucardi is feeble, but does not present any peculiar characters, the 
nostrils being quite open, the supranasal feathers dense and reaching nearly to the 
nostrils. There are well-developed rictal bristles. The tarsi are covered behind with 
ill-defined scutella, the claws have all deep lateral grooves. The wings and tail are 
much rounded. 
1. Formicivora boucardi. | 
Formicivora doucardi, Scl. P. Z. 8. 1858, p. 8300*; 1859, p. 883°; Cat. Am. Birds, p. 183, t. 16°; 
Cat. Birds Brit. Mus. xv. p. 254*; Moore, P. Z. S. 1859, p. 55°; Scl. & Salv. Ibis, 1859, 
p-119°; P. Z. S. 1864, p. 3567; 1870, p. 837°; Lawr. Ann. Lye. N. Y. vii. p. 469°; ix. 
p- 108”; Salv. P. Z.S. 1870, p. 195"; Ibis, 1872, p. 318 (?)"*; Boucard, P. Z. S. 1878, 
p- 61; Nutting, Pr. U. S. Nat. Mus. vi. p. 405; Zeledon, An. Mus. Nac. Costa Rica, 
1887, p.115”. 
»Formicivora quixensis, Cassin, Pr. Ac. Phil. 1860, p. 190%; Lawr. Ann. Lyc. N. Y. vi. p. 825. 
Nigra; plaga magna dorsali celata alba; tectricibus alarum omnibus et rectricibus (quatuor medianis exceptis) 
macula alba terminatis; subalaribus et remigibus interne albis; hypochondriis griseo tinctis: rostro et 
pedit is nigris. Long. tota 4:3, ale 1:9, caude# rectr. med. 1°85, rectr. lat. 1:15, rostri a rictu 0°65, 
tarsi 0°6. , 
2 supra grisea, macula dorsali sicut in maris, alis et cauda quoque albo similiter maculatis ; subtus omnino 
rufo-castanea. (Descr. maris et femine ex Choctum, Guatemala. Mus. nostr.) . 
Hab. Mexico, Acatepec!, Playa Vicente? (Boucard); Guatemata, Choctum, Yzabal, 
Teleman (0. S. & F. D. G.); Honpuras, Omoa (Leyland®*), San Pedro (G. MV, 
Whitely *); Nicaragua, Chontales (Belt 12), Los Sabalos (Natting 4); Costa Rica, 
