214 rOEMICAElID^, 



are males, and the female still remains unknown to us, though specimens of both 

 sexes were obtained atKopaybamba in Peru by Jelski, who shot them from a wandering 

 band of birds as they searched the leaves at the ends of the branches of the trees ^. 



T. callinota is the only species of its genus which has a plain black crown, a yellowish 

 abdomen, and yellow edges to the wing. 



b'. VihrissoB obvice, acrotarsium scutellatum, planta Integra. 



c". Sectrices decern. 

 CERCOMACEA. 

 Cercomacra, Sclater, P. Z. S. 1858/ p. 244 j Cat. Birds Brit, Mus. xv. p. 263. 



A genus of about ten species, of which two only occur within our limits, both of 

 them widely spread species on the southern continent — C. tyrannina extending its range 

 to Southern Mexico, C. nigricans to the State of Panama. 



Cercomacra is a peculiar genus in several respects, the tail having the abnormal 

 number of ten feathers. The bill is wide, and the rictal vibrissse clearly shown. The 

 nostrils are round and open, the dense nasal feathers reaching to the posterior margin 

 of the nostrils. The tail is long and much rounded. 



1. Cercomacra tyrannina. 



Pyriglena tyrannina, Scl. P. Z. S. 1855, pp. 90 \ 147j t. 98 ^ 



Cercomacra tyrannina, Scl. P. Z. S. 1859, pp. 55 ', 383 * ; Cat. Birds Brit. Mus. xv. p. 265 ' ; Scl. 



& Salv. Ibis, 1859, p. 119^ 1860, p. 36'; 1864, p. 356'; 1870, p. 837"; Salv. P. Z. S. 



1867, p. 145'°; 1870, p. 195"; 1883, p. 424 '^ Lawr. Ann. Lye. N. Y. ix. p. 109"; 



Boucard, P. Z. S. 1878, p. 61 '* ; Nutting, Pr. U.S. Nat; Mus. vi. pp. 386 '^ 405 "■' ■; Tacz. 



Orn. Per. ii. p. 54"; Ze]edon, Ann. Mus. Nac. Costa Rica, 1887, p. 115 ". 

 Hypocnemis schistacea, Lawr. Ann. Lye. N. Y. vii. p. 325 (nee Scl.) ". 

 Disythamnus rufiventris, Lawr. Ann. Lye. N. Y. viii. p. 131 (cf. Salv. Ibis, 1874, p. 316) "'. 



Nigricanti-cinerea, humeris et tectrioibus alarum marginibus albis, plaga dorsali celata alba : subtus pallidior, 

 alidomine imo murino-brunneo tincto, subalaribus oinereis, remigibus interne albo marginatis ; cauda 

 nigricante, rectricibus externis vix albido stricte terminatis : rostro et pedibus nigris. Long, tota 5-5 

 alse 2-4, caudae rectr. med. 2-4, rectr. lat. 1-5, rostri a rietu 0-75, tarsi 0-9. (Descr. maris ex Teapa 

 Tabasco, Mexico. Mus. nostr.) 



$ supra rufo-brunnea, plaga dorsali celata alba : subtus omnino nifa, gula pallidiore, subalaribus rufis remi- 

 gibus interne pallide cervino marginatis : rostro et pedibus ooryliuis, illius mandibula pallida. (Descr. 

 feminae ex Chisec, Guatemala. ; Mus. nostr.) 



cJ juv. feminse similis, sed supra obscurior et pectore plumis cinereis mixto. 



Hah. Mexico, Playa Vicente [Boucard ^, M. Trvjillo), Sochiapa {Trujilh) ; British 

 HoNDUEAS, Belize [Leyldnd ^) ; Guatemala, Chisec, Choctura, Coban ^ Yzabal 

 {0.8.& F. D. G.) ; Honduras, San Pedro (G. M. Whitely ^) ; Nicaragua, Matagalpa 

 [W. B. Bichardson), Sucuya ^^ Los Sabalos^^ (N'uiting); Costa Rica, Tucurriqui 



