ARDEA ATRICOLLIS. — Female. 
Aves.— Plate LXXXYI. 
Capite, crista, cerviceque superne viridi-nigris ; gula guttureque surarao albis ; gutture infimo albo nigro- 
striato ; interscapuliis nigro-purpureis viride nitentibus; pectore ventreque flavo-cinereis ; tarsis 
pedibusque viridi-nigris ; niandibula superiore antice purpureo brunnea ; spatio nudo circa oculos 
flavo ; niandibula inferiore antice brunnea, postice flava. 
Longitudo e rostri apice ad basin caudse 35 unc. ; caudee 7 unc. 
Audea Atkicollis, Wagler, Syst. Avium, pars prima. 
Colour. — The upper and lateral parts of the head, the nape, the crest 
feathers, and the sides and back of the neck deep black glossed with green, 
the latter, particularly towards the interscapulars, lightest and faintly tinted 
with grey. Interscapulars deep blackish purple, with a greenish gloss ; the 
back rusty pearl-grey. Tail blackish purple, glossed with green. The lesser 
wing coverts dark pearl-grey, tinged more or less with a rusty yellowish 
brown ; the outer vanes of the primary and secondary quill coverts pearl- 
grey, the inner vanes dark lavender-purple, fading towards the quills into 
white. The outer vanes of the primary quill feathers a deep lavender-purple, 
the inner vanes blackish purple tinted with brown, which towards the points 
fades into lavender-purple ; the secondary quill feathers blackish purple 
glossed with green ; the tertiaries deep lavender-purple ; the scapular 
feathers deep lavender-purple, glossed with green. The chin, the upper parts 
of the throat, and the sides of the neck pure white ; the middle of the throat 
white, longitudinally streaked with black glossed with green ; lower parts of 
the throat white, sparingly streaked with faint blackish lines ; the long feathers 
pendent from the front and sides of the neck neai to the bieast pearl-grey, varie- 
gated with yellowish grey, and some of them streaked with white. The breast, 
belly, vent, and under tail coverts intermediate between pearl and yellowish 
grey, the under tail coverts darkest. Thighs yellowish grey. The naked 
