304: Zoological Society :— 
EvucrerHaLa HYPOCYANEA, Gould. 
Crown of the head, back of the neck, back and flanks somewhat 
dull-green ; throat and chest brilliant blue, passing into glittering 
green on the centre of the abdomen; wings purplish-brown; upper 
tail-coverts reddish-bronze ; under tail-coverts brownish-black, with 
bronzy tips; tail steel-black ; thighs brown; upper mandible black ; 
basal two-thirds of the under mandible flesh-colour, the apical third 
black. 
Total length 33 inches ; bill 3; wing 2; tail 12. 
Hab. Said to be Bahia in Brazil. 
Remark.—This is a rather small, but distinctly marked species, 
unallied to any other bird. Lesson’s Plate 49 of his ‘ Histoire Na- 
turelle des Oiseaux-mouches,’ appears to have been taken from a 
bird of this kind; but the term dzcolor cannot for a moment be 
entertained. 
ErytTHRONOTA! ELEGANS, Gould. 
Crown and all the under surface of the body glittering light-green ; 
back of the neck and back golden- or orange-green ; upper tail-coverts 
purplish-red or puce-colour; tail long, forked, and of a purplish 
violet-hue with green reflexions on the tips of the two centre feathers ; 
wings purplish brown; tarsi white; under tail-coverts grey with 
bronzy-purple centres ; upper mandible flesh-colour at the base, and 
black for the remainder of its length; under mandible flesh-colour, 
except at the tip, which is black. 
Total length 32 inches; bill 13; wing 23; tail Z. 
Hab. Unknown. 
Remark.—It is easier to assign a specific name to a bird than to 
determine to which generic form it is referable; and if there be 
any bird which is a puzzle to the ornithologist, this is one. It is a 
very elegant species, and quite distinct from every other known 
Humming-Bird : in its glittering light-green crown, throat, and chest 
it looks like a Chlorostilbon ; but the form of its tail and some other 
characters ally it to the Hrythronote, with which I have provisionally 
placed it. 
THAUMATIAS VIRIDICEPS, Gould. 
Crown of the head, nape, and sides of the neck glittering light 
green; back and shoulders bronzy-green ; throat and abdomen pure 
white; flanks white, faintly spotted with yellowish-green ; under 
tail-coverts white ; the rather short and narrow tail-feathers purplish- 
grey, with an obscure band of purplish-brown near the tip of the 
three outer ones on each side; upper mandible black; under man- 
dible yellowish, except at the extreme tip, which is black. 
Total length 4 inches ; bill ;%; wing 23; tail 12. 
Hab. Ecuador. 
Remark.—Of this somewhat remarkable species I have two speci- 
mens, which appear to be male and female. It is a robust bird, being 
almost as stout in its bill, head, and body as the members of the 
genus Cyanomyia, while its tail is short and the feathers narrow, as 
in Thaumatias leucogaster and T. chionopectus. 
