BIRDS OF NORTH AND MIDDLE AMERICA. 431 



maries attenuated or otlierwise modified) ; tail slightly more than 

 half to two-thirds as long as wing, shallowly to deeply emarginate, 

 the lateral rectrices sometimes slightly narrowed terminally; tarsi 

 feathered; outer toe nearly as long as middle toe, the inner decidedly 

 shorter. 



Coloration. — Above metallic green or bronze-green, the pileum 

 usually darker and duller, but sometimes brilliant metallic green or 

 blue; tail olive-bronzy, sometimes with an indistinct subterminal 

 band of darker; under parts, except sides, varying from wholly white 

 to almost entirely metallic green, but always with some white on 

 abdomen. Sexes alike. 



Range. — Southern Mexico to Peru, Bolivia, Brazil, and Cayenne. 

 (About twenty-five species, mostly South American.) 



KEY TO THE SPECIES OF AGYRTRIA. 



a. Under parts mostly white. 



h. Pileum dull metallic green or bronze; maxilla pale with dusky tip; sides and 

 flanks white slightly mixed on outer jjortion with metallic green; under tail- 

 coverts white. (Southeastern Mexico to Costa Rica.) 



Agyrtria Candida (p. 432). 

 hh. Pileum brilliant metallic green (emerald green); mandible black or dusky; 

 sides and flanks metallic green; under tail-coverts light brownish gray mar- 

 gined with white. (TrinidAd and Venezuela.) 



Agyrtria chionopectus (extralimital).« 

 aa. Under parts mostly metallic green. 



h. Rectrices (except middle pair) bronze crossed by a subterminal band of dusky 

 and tipped with grayish; throat and chest metallic bluish green changing to 



greenish blue. (Honduras?) Agyrtria luciae (p. 434). 



hh. Rectrices (except middle jjair) mostly blackish; throat and chest metallic 

 yellowish green. (Venezuela and Trinidad to lower Amazon Valley.) 



Agyrtria viridissima (extralimital).^ 



a Thaumatias chionopectus Gould, Mon. Troch., v, Sept., 1859, pi. 293 (Trinidad). — 

 Pohjtmus chionopectus Leotaud, Ois. Trinidad, 1866, 140. — Leucolia chionopectus 

 Mulsant and Verreaux, Classif. Troch., 1866, 31. ^A[gyr trio] niveipectus Cabanis and 

 Heine, Mus. Hein., iii, 1860, 33, footnote (new name for T. chionopectus) . — Agyrtria 

 niveipectus Elliot, Classif. and Synop. Troch., 1879, 202; Salvin, Cat. Birds Brit. 

 Mus., xvi, 1892, 180. — A[gyrtria] chionopectus (typica) Hartert, Das Tierreich, Troch., 

 1900, 42. — Leucolia niveipectus Mulsant and Verreaux, Hist. Nat. Ois.-Mouch., i, 

 1874, 227; iv, 1878, 173. 



In the collection of the Museum of Comparative Zoology are four specimens of thia 

 species labeled "Grenada, W. I. Peter Gellineau." As these are of the well-known 

 "make" of Triniddd "trade" skins, and the species has not been recorded from 

 Grenada, I conclude that a wrong locality has been assigned the specimens in question. 



b {'i)Trochilus macuJatus Vieillot, Ois. Dor., i, 1801, 87, 117, pi. 44; Nouv. Diet. 

 d'Hist. Nat., vii, 1817, SGl.—AgyrtriamaculataMaiynard, Birds E. Mass., 1870, 128 (Cam- 

 bridge, Massachusetts). — Ornismya viridissima Lesson, Hist. Nat. Ois.-Mouch., 1829, 

 pp. xxxiv, 207, pi. 75 ("Bresil"). — Trochilus viridissimus Lesson, Ind. Gen. et Synop. 

 Troch., 1832, p. xxvi. — {?) Thaumatias viridissimus Burmeister, Syst. Ueb. Th. Bras., 

 ii, 1856, Mi.— Agyrtria viridissima Salvin, Cat. Birds Brit. Mus., xvi, 1892, 186. — 

 A[gyrtria] viridissima Hartert, Das Tierreich, Troch., 1900, 45. — [Chlorestcs] mal- 

 vina Reichenbach, Aufz. der Colibr., 1854, 7; Troch. Enum., 1855, 4, pi. 696, figs. 

 4550, 4551.- — A[gyrtria] malvinae Cabanis and Heine, Mus. Hein., iii, 1860, 33, foot- 

 note. — [Chlorestes] ^. Saucerottia viridipectus Reichenbach, Aufz. der Colibr., 1854, 



