84 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
“On the whole, and in the absence of any information as to the 
habits of any species of Terenura, we are inclined to place the genus 
near Myrmotherula, notwithstanding the difference of coloration and 
the much longer tail. 
‘‘The bill is longer than that of Myrmotherula surinamensis, but is 
otherwise very similar. The wings are decidedly longer and less 
rounded. The tarsi are covered behind with large scutella, the 
sutures of which are, however, rather indefinite. 
‘Four or five species constitute the genus Terenura, all more or less 
rare birds. These are distributed over a wide area of Tropical 
America—one or two in Southeastern Brazil, one in Guiana, one in 
Eastern Ecuador, and T. callinota, a western and northwestern bird 
the range of which is given below’’? [Veragua to Peru]. 
TERENURA CALLINOTA (Sclater). 
RUFOUS-RUMPED ANTWREN. 
Adult male.—Above greenish olive; cap black; lores and sides of 
head whitish; lower back bright chestnut; wings and tail blackish, 
with olivaceous edgings; wing-coverts black, broadly tipped with 
white; bend of wing and adjoining coverts bright yellow; beneath 
pale greenish yellow; throat and breast pale cinereous; under wing- 
coverts sulphur-yellow; whole length 4 inches, wing 2.2, tail 1.7.2 
Western Panamé (Calobre, Verégua) through Colombia (Bogota) 
and Ecuadér (Nanegél; Pallatanga) to central Peru (Roypaybamba). 
Formicivora callinota Sctater, Proc. Zool. Soc. Lond., 1855, 89, pl. 96 (Bogotad, 
Colombia; coll. Brit. Mus.,) 147 (Bogot4); 1858, 242 (Bogotd). 
Terenura callinota TaczANowsKI, Proc. Zool. Soc. Lond., 1874, 530 (Roypay- 
bamba, centr. Peru); Orn. du Pérou, ii, 1884, 52—TaczanowskI and Brr- 
LepscH, Proc. Zool. Soc. Lond., 1885, 118 (Pallatanga, Ecuadér).—Sciater, 
Cat. Birds Brit. Mus., xv, 1890, 257 (Calobre, Verdégua; Bogot&; Nanegdl, 
Ecuador).—Satvin and Gopman, Biol. Centr.-Am., Aves, ii, 1892, 213.—BrEr- 
LepscH and StotzMaNnn, Proc. Zool. Soc. Lond., 1902, 58 (Ropaybamba, Peru). 
[Terenura] callinota ScLateR and Satvin, Nom. Av. Neotr., 1873, 72.—SHarpe, 
Hand-list, iii, 1901, 27. 
Genus RAMPHOCAENUS Vieillot. 
Ramphocenus¢ Virmiot, Nouv. Dict. d’Hist. Nat., xxiv, 1818, 112 (diagnosis 
but nd typegiven). Ramphocenus Vieillot, Nouv. Dict. d’Hist. Nat., xxix, 
1819, 5. (Type, R. melanurus Vieillot.) 
Rhamphocenus (emendation) StrickLanp, Ann. Mag. N. H., vi, 1841, 421. 
Acontistes SUNDEVALL, Kgl. Vet.-Ak. Handl., 1835 (1836), 95. (Type, Rampho- 
cenus melanurus Vieillot.) 
Scolopacinus Bonaparte, Proc. Zool. Soc. Lond., 1837, 119. (Type, S. rufiventris 
Bonaparte.) 
@Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1892, 213. 
bSclater, Cat. Birds Brit. Mus., xv, 1890, 257, 258. 
Chapdoc, rostrum, xacvéc, novus. (Vieillot.) 
