183 
gined with paler brown ; throat white ; all the under surface yellow ; 
irides dark brown; bill blackish brown ; feet blackish grey. 
Total length, 33 inches; bill, 3 ; wing, 23; tail, 24; tarsi, 3. 
Hab. Port Essington. 
Geryconre* macntrostris. Ger. corpore supra fusco, infra albo ; 
primariis leviter olivaceo-marginatis ; caudd prope apicem indi- 
» stincté fuscescenti-nigro vittata. 
All the upper surface brown; margins of the primaries slightly 
tinged with olive ; tail-feathers crossed near the extremity by an in- 
distinct broad band of brownish black; all the under surface white, 
tinged with brownish buff; irides light brown ; bill olive-brown ; the 
base of the lower mandible pearl-white ; feet greenish grey. 
Total length, 32 inches ; bill, ;%,; wing, 24; tail, 1]; tarsi, 3. 
Hab. Port Essington. 
, Gerycone cHLononotus. Ger. capite et nuchd fuscescenti-cinereis ; 
dorso, alarum tectricibus, uropygio, tectricibus caude, remigum 
primorum marginibus, et per partem dimidiam basalem marginibus 
caude rectricum nitid? olivaceo-viridibus ; corpore subtis, lateribus, 
crissoque olivaceo-flavis. 
Head and back of the neck brownish grey; back, wing-coverts, 
rump, upper tail-coverts, margins of the primaries, and the margins 
of the basal half of the tail-feathers, bright olive-green; primaries 
and tail-feathers brown, the latter becoming much darker towards 
the extremity ; under surface white; sides and vent olive-yellow ; 
irides wood-brown; upper mandible greenish grey; lower mandible 
white ; feet blackish grey. 
Total length, 34 inches; bill, 4 ; wing, 23; tail, 12; tarsi, 3. 
Hab. Port Essington. 
GERYGONE LEVIGASTER. Ger. corpore superiore ferrugineo-fusco ; 
inferiore albo, leviter flavido tincto. 
A narrow obscure line, commencing at the nostrils and passing 
over the eye, yellowish white; all the upper surface rusty brown; 
primaries brown, margined with lighter brown ; tail whitish at the 
base, gradually deepening into nearly black, the lateral feather 
largely, and the remainder, except the two middle ones, slightly 
tipped with white ; all the under surface white, slightly washed with 
yellow ; irides light reddish brown ; bill olive-brown ; base of lower 
mandible light ash-grey ; feet dark greenish grey. 
Total length, 32 inches; bill, 5; wing, 2; tail, 13; tarsi, 2. 
Hab, Port Essington. 
For a new form, nearly allied to Gerygone, Mr. Gould proposed 
the generic name of Smicrornis, with the following characters :— 
Gen, Char.—Rostrum parvulum, et instar grani tritici; feré cylin- 
draceum ; a basi incurvatum. Nares basales oblonge, et oper- 
* Psilopus of the former parts of these ‘ Proceedings,’ and for which the 
term Gerygone is now substituted, the former term having been previously 
employed, 
