BIRDS OF NORTH AND MIDDLE AMERICA. 355 
Mus., xvi, 1892, 286 (Choctim, Chisec, and Cob4n, Guatemala).—SaLvin 
and Gopman, Biol. Centr.-Am., Aves, ii, 1892, 321. 
Pampa pampa Exx107, Classif. and Synop. Troch., 1879, 22, in text. 
[Sphenoproctus] pampa ScraTeR and Savin, Nom. Av. Neotr., 1873, 79. 
Sphenoproctus (Campylopterus) pampa Mutsant and Vrerreavux, Hist. Nat. 
Ois.-Mouch., iv, livr. 2, 1877, 147 (Guatemala). 
Pampa campyloptera Retcuensacn, Aufz. der Colibr., 1854, 11; Troch. Enum., 
1855, 9, pl. 800, figs. 4861, 4862. 
[Pampa] lessonit Stmon, Cat. Troch., 1897, 8 (Guatemala).—Snarrr, Hand-list, 
ii, 1900, 101 (Guatemala; n. Yucatan). 
Plampa] lessoni Harrert, Das Tierreich, Troch., 1900, 30 (monogr.). 
PAMPA PAMPA CURVIPENNIS (Lichtenstein). 
CURVE-WINGED SABER-WING. 
Similar to P. p. pampa but bill decidedly longer, under parts much 
paler (dull grayish white instead of drab-gray), and pileum duller 
and more greenish or less violaceous blue. 
Adult male—Pileum rather dull metallic violet-blue, varying to 
greenish blue; rest of upper parts bright metallic bronze or bronze- 
green, the middle pair of rectrices varying from bronze-green to 
bluish green, the next pair similar but passing into blackish terminally, 
the rest mostly dull black (faintly glossed) with basal portion of 
outer web bronze-green, the outermost edged for terminal half (more 
or less) with grayish brown (sometimes with outer web mostly of 
this color) and sometimes with a streak of the same near shaft; 
remiges dark brownish slate or dusky, very faintly glossed with 
purplish bronzy; auricular and suborbital regions brownish gray; 
loral and malar regions, together with whole of under parts very 
pale gray or dull grayish white, the under tail-coverts inclining 
more or less to brownish buff (sometimes decidedly of this color) 
with the central or mesial portion indistinctly dull grayish; bill 
dull black; iris dark brown; feet dusky brownish (in dried skins); 
length (skins), 129-143 (136); wing, 65-68.5 (66.8); tail, 50-55.5 
(52.5); culmen, 26-29.5 (27.3).¢ 
Adult female.—Similar to the adult male but middle rectrices less 
elongated, lateral rectrices broadly tipped with dull gray, and blue 
of pileum usually duller, sometimes replaced on forehead with dull 
dusky grayish; length (skins), 120-130 (125); wing, 60-68 (63.6); 
tail, 46-50 (47.4); culmen, 26-27.5 (26.6).° 
Young.—Similar to adults but under parts tinged or suffused 
with brownish buffy.°¢ 
@ Nine specimens. 
6 Four specimens. 
¢ A specimen in the Biological Survey Collection (no. 158756, coll. U. 8. Nat. 
Mus.) from Metlaltoyuca, Puebla, with sex determined as male by the collector 
but probably a female or immature male, differs from all other specimens examined 
in having the green of back, etc., much more bronzy and blue of pileum decidedly 
greenish. 
