Zoological Society. 421 



shorter, the green of the body ochreous, and the lower part of 

 the abdomen more buffy, or not so green as in the Gouldii : the 

 most remarkable difference, however, is in the outer tail-feathers, 

 which are much narrower and not so green. By some ornitholo- 

 gists this might be considered as a mere local variation ; but as I 

 have seen many of each kind, and find that the differences are con- 

 stant, I feel assured that the two birds are specifically distinct. 



4. Trochilus (ocreatus) rufocaligatus. Troch. guld et collo 

 super ior e fulgentibus metallice viridibus ; tar sis densis plumis fer- 

 rugineis ocreatis ; caudd fused, rectricibus externis prolongatis 

 angustis lata tamen spat hula formd terminatis. 



Throat and fore-part of the neck luminous metallic green ; plumage 

 of the body bronzy green ; wings brown ; tarsi clothed with a thick 

 ruff of rusty-red feathers ; tail brown, the outer feathers prolonged 

 and narrow, and ending in a broad spatulate tip ; bill black. 



Total length, 41 inches ; bill, f ; wing, 1 J ; tail, 2£. 



Hab. Bolivia. 



Remark. — Nearly allied to the Ornismya Underwoodii, Less. 



5. Trochilus (ocreatus) ligonicaudus. Troch. facie, collo supe- 

 riore et pectore viridibus, plumis pectoris majoribus, fulgentiori- 

 bus, griseo nonnunquam fimbriatis ; medio abdomine aureo-fusco ; 

 uropygio fascid albo-cervind transversim ornato ; caudd purpuras- 

 cente fused, fascid latd per mediam stramined ; rectricibus later a- 

 libus primo diminuentibus, latis autem tanquam spathulis termi- 

 nantibus. 



Face and forepart of the neck green, which colour is continued 

 on the chest, where the feathers become larger, longer, more lumi- 

 nous, and some of them edged with grey ; centre of the abdomen 

 golden brown ; lower part of the abdomen and under tail- coverts 

 buffy brown; wings purplish black; back and upper tail-coverts 

 green, the rump crossed by a band of buffy white ; tail purplish 

 brown, with a broad stripe of buff down the centre ; the lateral fea- 

 thers tapering and terminating in a large spatulate tip ; bill black. 



Total length, 4£ inches ; bill, f ; wing, 1| ; tail, 2£. 



Hab. Brazil. 



Remark. — Nearly allied to Trochilus platurus. 



6. Trochilus ( ?) cupricauda. Troch. guld luminose cceru- 



leo-viridi; vertice, collo, dorso, omnique corpore superiore ful- 

 gentibus saturate purpureo-fuscis ; caudd infra fulgentissimd amed, 

 supra, aned vario lumine nunc viridi, nunc purpurea, splendente. 

 Throat lustrous blueish green ; crown of the head, neck, back and 

 all the upper surface dark lustrous purplish brown ; wings the same, 

 but lighter ; under surface of the tail rich fiery copper colour and 

 very luminous; upper surface in one light rich purplish copper 

 colour, and in another greenish ; bill black. 



Total length, 5 inches ; bill, 1 ; wing, 3 ; tail, 2J. 



Hab. Bolivia. 



Remark. — This species is much larger, but belongs to the same 



