82 RASS EES 
Characters. Bill similar in shape to that of Wooua, but rather slenderer. Nostrils basal, 
operculate and posteriorly concealed by the antrorse, latero-frontal plumules, exactly as in - 
Mohoua. Rictal bristles equally short, but somewhat stronger and stiffer, Wing long, pointed ; 
fifth and sixth primaries longest, fourth and seventh but a little shorter; third falling between 
seventh and eighth; second about equal to tenth, scarcely longer than secondaries ; first primary 
conspicuously longer than half the second. Tail very long, about equal to wing, strongly 
graduated; rectrices rather pointed, with the shafts acuminate and slightly projecting, but 
much less stiffened than in J/ohowa. Tarsus much slenderer than in JJohona, conspicuously 
longer than middle toe with claw; acrotarsium booted, sometimes a few obsolete scutes on 
lower portion. [oes more slender than in J/ohoua; middle toe longest, outer toe slightly longer 
than inner one; hallux about as long as outer toe, but stouter, its claw decidedly shorter than 
the digit. Claws shorter and much more compressed than in J/ohoua, strongly arched. 
Wing 
e¢ 70-75, tail 70-73, tarsus about 26, bill 12 mm. 
Coloration. Plumage soft and copious. Sexes alike. Head all round, breast and middle 
of abdomen white, shaded with greyish on crown, with buffy on belly; flanks washed with 
brownish, Back pale reddish brown; lesser upper wing coverts paler brown, the median and 
ereater series dusky, with broad whity brown edges; remiges and rectrices brown, the former 
exteriorly edged with paler brown. Bill and feet black. Young birds are duller in colour, the 
white of the pileum is mixed with brown and the under parts are less purely white. 
Geographical Distribution. New Zealand. 
Observations. While closely resembling Wohoua in shape of bill and tail as well as in 
style of coloration, yet Certhiparus is easily distinguished by its relatively longer tail, different 
proportion of the toes and different wing-formula. 
1. Certhiparus albicilla (lesson). (Pl. 3, Fig. 8.) 
Fringilla albicilla Lesson, Voy. Coquille. Vol. 1, 11, p. 662 (1828) (« a la baie des Iles a la Nouvelle-Zelande »). 
Parus senilis Dubus, Bull, Acad. Bruxelles, Vol. 6, 1, p. 297 (1839) (Nouvelle-Zélande). 
Clitonyx albicapilla W. L. Buller, Hist. Birds New Zeal., ed. 2, Vol. 1, p. 53 (1887) (nom. emend.). 
Certhiparus cinerea Ellman, The Zoologist, Vol. 19, p. 7465 (1861) (nom. nud.). 
Fig. Buller, loc. cit. pl. 6. 
Hab. North Island of New Zealand. 
24. GENUS FINSCHIA HutTTron 
Finschia Hutton, The [bis (8), Vol. 3, p. 319 (sp. tvpe : Certhiparus novae zealandiae auct.). 
Characters. Bill very short, about half as long as head, slender, much compressed, 
its width at base being equal to its depth ; calmen decidedly convex; gonys nearly straight. Rictal 
bristles numerous, well-developed, reaching almost to tip of bill, Nostrils basal, distinctly 
operculate, almost completely hidden by antrorse, latero-frontal plumules. Wing moderately 
long, rounded; fifth and sixth primaries longest, fourth little shorter, but decidedly longer than 
seventh; third falling between seventh and eighth, second equal to tenth; first primary conspi- 
cuously longer than half the second. Tail much longer than wing, strongly graduated, with 
rectrices soft and broadly rounded at tip, shafts not stiffened nor projecting. Tarsus shorter 
