Zoological Society. 61 



Total length, 3| inches ; bill, -f>^ ; wing, 2i ; tail, If ; tarsi, f. 



Hab. Port Essington. 



Gerygoxe levigaster. Ger. corpore superiore ferrugineo-fusco ; 

 inferiore albo, leviter flavido tlncto. 



A narrow obscure line, commencing at the nostrils and passing 

 over the ej^e, yellowish white ; all the upper surface rusty brown ; 

 primaries brown, margined with lighter brown ; tail whitish at the 

 base, gradually deepening into nearly blaclv, 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, 3| inches; bill, ^ ; wing, 2 ; tail, 1^ ; tarsi, f . 



Hub. 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 ; fer6 cylin- 



draceum ; a basi incurvatum. Nares basales oblonga;, et oper- 



culo obtect£e ; ad basin rostri, pili tenuissimi admodum pauci. 



Ala modice longse, alula brevissima, primariee tertia, quarta, et 



quinta longissimse, et inter se fere sequales. Cauda brevis, et 



quadrata. Tarsi modici ; digiti perbreves ; digitus posticus cum 



intermedio fere coa;qualis. Ungues admodum adunci, et ad ha3- 



rendum aptati. 



Smicrorxis flavescens. Srnic. corpore superiore nitide flaves- 

 centi-olivaceo, plumis capitis strigd fused fere obsoletd longitndi- 

 naliter notatis, corpore inferiore nitide favo. 



All the upper surface briglit yellowish olive ; the feathers of the 

 head with an indistinct line of brown down the centre ; wings brown ; 

 tail brown, deepening into black near the extremity, and with a large 

 oval spot of white on the inner web, near the tij) of all but the two 

 central feathers ; all the under surface bright yellow. 



Total length, 2| inches ; bill, y^^j ; M'ing, 1| ; tail, 1;^ ; tarsi, yc^. 



Hab. Port Essington. 



Pachycephala falcata, Gould. Pack, vertice, loris, plumis au- 

 ricularibus, dorso, caudaque tectricibus cinereis ; guld alba, lunuld 

 7iigrd infra cirawidatd. 



Adult male. — Crown of the head, lores, ear-coverts, back and 

 upper tail-coverts grey ; wings dark brown, all the feathers mar- 

 gined with grey ; throat white, bounded below by a distinct crescent 

 of black ; abdomen, flanks, and under tail-coverts orange-brown ; 

 tail dark brown ; the basal portion of the webs edged with grey ; 

 irides reddish brown ; bill black ; feet blackish brown. 



Total length, 5| inches ; bill, | ; wing, 3^ ; tail, 2| ; tarsi, -i. 



Adult female. — Crown of the head and all the upper surface grey ; 

 ear-coverts brownish grey ; throat huffy white, passing into light buff 

 or fawn-colour on the chest, flanks, abdomen, and under tail-coverts ; 

 the feathers of the throat and chest with a narrow dark line down 

 the centre ; wings and tail as in the male. 



